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1. The head, neck, trunk, and extremities. The human body, consisting of head (caput), neck (collum), trunk (truncus), and limbs (membra). 2. The material part of a human, as distinguished from the mind and spirit. 3. The principal mass of any structure. 4. A thing; a substance. See also corpus, soma.corpus (1) [NA]; [A.S. bodig]
acetone b. ketone b
adrenal b. suprarenal gland
alcoholic hyaline b.'s Mallory b.'s
Alder b.'s granular inclusions in polymorphonuclear leukocytes; they take on a dark color with Giemsa-Wright stain and react metachromatically with toluidine blue. See also Alder's anomaly.
alveolar b. alveolar process
amygdaloid b. a rounded mass of gray matter in the temporal lobe internal to the cortex of the uncus and immediately anterior to the inferior horn of the lateral ventricle; its major afferents are olfactory and its efferent connections are with the hypothalamus and mediodorsal nucleus of the thalamus and it is also reciprocally associated with the cortex of the temporal lobe; it is subdivided into two major nuclear groups; basolateral and corticormedial.corpus amygdaloideum [NA], almond nucleus, amygdaloid complex, amygdaloid nucleus, nucleus amygdalae;
amylogenic b. amyloplast
amyloid b.'s of the prostate obsolete term for small masses of colloid material often present in the tubules of the gland. See also corpus amylaceum.
anococcygeal b. anococcygeal ligament
anterior quadrigeminal b. superior colliculus
aortic b.'s para-aortic b.'s
Arnold's b.'s small portions or minute fragments of erythrocytes (sometimes mistaken for blood platelets), or small "ghosts" of erythrocytes.
asbestos b.'s ferruginous b.'s with asbestos fibers as a core; a histologic hallmark of exposure to asbestos.
Aschoff b.'s a form of granulomatous inflammation characteristically observed in acute rheumatic carditis; fully developed Aschoff b.'s consist of fibrinoid change in connective tissue, lymphocytes, occasional plasma cells, and abnormal characteristic histiocytes.Aschoff nodules;
asteroid b. 1. an eosinophilic inclusion resembling a star with delicate radiating lines, occurring in a vacuolated area of cytoplasm of a multinucleated giant cell; especially frequent in sarcoidosis, but occurs also in other granulomas; 2. a structure that is characteristic of sporotrichosis when found in the skin or secondary lesions of this mycosis; in tissue, it surrounds the 3- to 5-mum in diameter ovoid yeast of Sporothrix schenkii.
Auer b.'s rod-shaped structures of uncertain nature in the cytoplasm of immature myeloid cells, especially myeloblasts, in acute myelocytic leukemia; may be an abnormal form of lysosomes; they contain peroxidase and acid phosphatase, and stain red by azure-eosin stains.Auer rods;
Babès-Ernst b.'s intracellular granules, present in many species of bacteria, which possess a strong affinity for nuclear stains.
Barr chromatin b. sex chromatin
basal b. an elongated centriolar structure situated at the base of each cilium at the apical margin of a cell.basal corpuscle, basal granule, blepharoplast, kinetosome;
bigeminal b.'s a bilateral single swelling of the roofplate of the embryonic midbrain that later in development becomes subdivided into a superior and an inferior colliculus. See quadrigeminal b.'s.corpora bigemina;
Bollinger b.'s relatively large, spheroid or ovoid, usually somewhat granular, acidophilic, intracytoplasmic inclusion b.'s observed in the infected tissues of birds with fowlpox; when b.'s are ruptured large numbers of fowlpox virus particles are released.
Borrel b.'s particles of fowlpox virus; aggregates of Borrel b.'s in infected cells result in the formation of Bollinger b.'s.
brassy b. a dark-colored, usually shrunken erythrocyte in which there is a malarial parasite.
Cabot's ring b.'s ring-shaped or figure-of-eight structures that stain red with Wright's stain, found in red blood cells in severe anemias, possibly a remnant of the nuclear membrane; a form of basophilic degenerative process.
Call-Exner b.'s small fluid-filled spaces between granulosal cells in ovarian follicles and in ovarian tumors of granulosal origin; they may form a rosette-like structure.
cancer b.'s discrete, acidophilic or amphophilic, hyaline b.'s of various shapes and sizes, occurring in the cytoplasm of some of the neoplastic cells and also extracellularly in the stroma of various carcinomas and sarcomas; formerly regarded by some observers as parasitic causal agents, but now thought to be products of cell necrosis (apoptosis).
carotid b. a small epithelioid structure located just above the bifurcation of the common carotid artery on each side. It consists of granular principal cells and nongranular supporting cells, a sinusoidal vascular bed, and a rich network of sensory fibers of the glossopharyngeal nerve. It serves as a chemoreceptor organ responsive to oxygen lack, carbon dioxide excess, and increased hydrogen ion concentration.glomus caroticum [NA], intercarotid b., nodulus caroticus;
b. of caudate nucleus the suprathalamic part of the caudate nucleus lying in the floor of the central part of the lateral ventricle.corpus nuclei caudati [NA];
cavernous b. of clitoris corpus cavernosum clitoridis
cavernous b. of penis corpus cavernosum penis
cell b. the part of the cell containing the nucleus.
central b. cytocentrum
central fibrous b. the fibrous area where the leaflets of the aortic, mitral, and tricuspid valves meet in the heart.
chromaffin b. paraganglion
chromatin b. the genetic apparatus of bacteria. See nucleus (2).
ciliary b. a thickened portion of the vascular tunic of the eye between the choroid and the iris; it consists of three parts or zones; orbiculus ciliaris, corona ciliaris, and ciliary muscle.corpus ciliare [NA], annulus ciliaris;
Civatte b.'s eosinophilic hyaline spherical b.'s seen in or just beneath the epidermis, particularly in lichen planus, formed by necrosis of individual basal cells.colloid b.'s;
b. of clavicle the sinuous portion of the clavicle between the sternal and acromial extremities.corpus claviculae [NA];
b. of clitoris the shaft or pendulous portion of the clitoris, composed of two fused corpora cavernosa clitoridae, the distal end of which is the glans clitoris.corpus clitoridis [NA];
coccygeal b. an arteriovenous (arteriolovenular) anastomosis supplied by the middle sacral artery and located on the pelvic surface of the coccyx. It was formerly called a gland (of Luschka) or a glomus and included with the paraganglia.corpus coccygeum [NA], arteriococcygeal gland, coccygeal gland, glomus coccygeum;
colloid b.'s Civatte b.'s
compressible cavernous b.'s submucous venous plexuses found at the level of the pharyngoesophageal junction and anal canal, which assist in reducing or obliterating the lumen.
conchoidal b.'s Schaumann b.'s
Councilman b. , Councilman hyaline b. an eosinophilic globule, seen in the liver in yellow fever, derived from necrosis of a single hepatic cell.Councilman's lesion;
Cowdry's type A inclusion b.'s droplet-like masses of acidophilic material surrounded by clear halos within nuclei, with margination of chromatin on the nuclear membrane.
Cowdry's type B inclusion b.'s droplet-like masses of acidophilic material surrounded by clear halos within nuclei, without other nuclear changes during early stages of development of the inclusion.
creola b.'s large compact clusters of ciliated columnar cells found in the sputum of some asthmatic patients.
cyanobacterium-like b.'s Cyclospora
cytoid b.'s swollen retinal nerve fibers which look like cells when cut transversely; found in cotton-wool patches.
cytoplasmic inclusion b.'s See inclusion b.'s.
Deetjen's b.'s platelet
demilune b. a circular b. of extreme transparency except for a crescentic punctate substance on one edge which contains hemoglobin. The b. is much larger than a red blood cell, but is thought possibly to be a degenerated red blood cell swollen by imbibition; it has been found in malaria and in convalescence from typhoid fever; the transparent portion is called the glass b.
Döhle b.'s discrete round or oval b.'s ranging in diameter from just visible to 2 mum, which stain sky blue to gray blue with Romanowsky stains, found in neutrophils of patients with infections, burns, trauma, pregnancy, or cancer.Döhle inclusions, leukocyte inclusions;
Donovan's b.'s clusters of blue or black staining, bipolar chromatin condensations in large mononuclear cells in granulation tissue infected with Calymmatobacterium granulomatis.
Ehrlich's inner b. a round oxyphil b. found in the red blood cell in case of hemocytolysis due to a specific blood poison.Heinz-Ehrlich b;
elementary b.'s 1. (E.B., EB) old term for virions, especially the largest virus particles, visible by light microscopy when stained; 2. platelet
b. of epididymis the middle part that extends downward from the head to the tail of the epididymis on the posterior surface of the testis.corpus epididymidis [NA];
epithelial b. parathyroid gland
fat b. of cheek buccal fat-pad
fat b. of ischiorectal fossa ischiorectal fat-pad
fat b. of orbit orbital fat-pad
ferruginous b.'s in the lungs, foreign inorganic or organic fibers coated by complexes of hemosiderin and glycoproteins, and believed to be formed by macrophages that have phagocytized the fibers. See also asbestos b.'s.
foreign b. anything in the tissues or cavities of the b. that has been introduced there from without, and that is not rapidly absorbable.
b. of fornix the middle part of the fornix situated ventral to the corpus callosum.corpus fornicis [NA];
fruiting b. any fungal structure that bears spores.
fuchsin b.'s 1. Russell b.'s 2. hyaline b.'s
b. of gallbladder the main part of the gallbladder terminating in the rounded fundus below and continuing into the neck of the gallbladder above.corpus vesicae biliaris [NA], corpus vesicae felleae [NA];
Gamna-Favre b.'s characteristic, relatively large, intracytoplasmic basophilic inclusion b.'s observed in endothelial cells in lymphogranuloma venereum; probably composed of degenerated nuclear material. See also Miyagawa b.'s.
Gamna-Gandy b.'s small firm spheroidal or irregular foci that are yellow-brown, brown, or rustlike in color, occurring chiefly in the spleen in such conditions as congestive splenomegaly and sickle cell disease, and consisting of relatively dense fibrous tissue or collagenous fibers impregnated with iron pigment and calcium salts; probably result from organization and scarring of sites where small perivascular hemorrhages occurred.Gamna-Gandy nodules, Gandy-Gamna b.'s, siderotic nodules;
Gandy-Gamna b.'s Gamna-Gandy b.'s
geniculate b. See lateral geniculate b., medial geniculate b.
glass b. See demilune b.
glomus b. glomus (2)
Golgi b. Golgi apparatus
Guarnieri b.'s intracytoplasmic acidophilic inclusion b.'s observed in epithelial cells in variola (smallpox) and vaccinia infections, and which include aggregations of Paschen b.'s or virus particles.
Halberstaedter-Prowazek b.'s trachoma b.'s
Hassall-Henle b.'s hyaline b.'s on the posterior surface of Descemet's membrane at the periphery of the cornea.Henle's warts;
Hassall's b.'s thymic corpuscle
Heinz b.'s intracellular inclusions usually attached to the red cell membrane, composed of denatured hemoglobin; they occur in thalassemia, enzymopathies, hemoglobinopathies, and after splenectomy. Visualization of these usually requires examination of red cells using supravital stains or by phase microscopy.
Heinz-Ehrlich b. Ehrlich's inner b
hematoxylin b.'s , hematoxyphil b.'s poorly defined, homogeneous basophilic remnants of whole nuclei, an occasional finding in the fixed tissues of patients with systemic lupus erythematosus, but observed more frequently in the renal glomeruli and the walls of blood vessels, and probably related to the LE phenomenon; so named because of their affinity for hematoxylin stain.
Herring b.'s accumulations of neurosecretory granules in dilated terminal endings of axons in the neurohypophysis.
Highmore's b. mediastinum testis
Howell-Jolly b.'s spherical or ovoid eccentrically located granules, approximately 1 mum in diameter, occasionally observed in the stroma of circulating erythrocytes, especially in stained preparations (as compared with wet unstained films); probably represent nuclear remnants, inasmuch as they can be stained with dyes that are rather specific for chromatin; the significance of the b.'s is not exactly known; they occur most frequently after splenectomy or in megaloblastic or severe hemolytic anemia.Jolly b.'s;
hyaline b.'s homogeneous eosinophilic inclusions in the cytoplasm of epithelial cells; in renal tubules, hyaline b.'s represent droplets of protein reabsorbed from the lumen. See also Mallory b.'s, drusen.fuchsin b.'s (2);
hyaline b.'s of pituitary accumulations of a gelatinous neurosecretory substance in the axons of the hypothalamohypophyseal tract in the posterior lobe of the hypophysis.
hyaloid b. vitreous b
b. of hyoid bone the body of the hyoid bone, from which the greater and lesser horns extend.corpus ossis hyoidei [NA], base of hyoid bone, basihyal, basihyoid;
b. of ilium it forms the upper two-fifths of the acetabulum and joins the pubis and ischium in the acetabulum. It continues above into the ala or wing of the ilium.corpus ossis ilii [NA];
inclusion b.'s distinctive structures frequently formed in the nucleus or cytoplasm (occasionally in both locations) in cells infected with certain filtrable viruses, observed especially in nerve, epithelial, or endothelial cells; may be demonstrated by means of various stains, especially Mann's eosin methylene blue or Giemsa's techniques. Nuclear inclusion b.'s are usually acidophilic and are of two morphologic types: 1) granular, hyaline, or amorphous b.'s of various sizes, i.e., Cowdry's type A inclusion b.'s, occurring in such diseases as herpes simplex infection or yellow fever; 2) more circumscribed b.'s, frequently with several in the same nucleus (and no reaction in adjacent tissue), i.e., the type B b.'s, occurring in such diseases as Rift Valley fever and poliomyelitis. Cytoplasmic inclusion b.'s may be: 1) acidophilic, relatively large, spherical or ovoid, and somewhat granular, as in variola or vaccinia, rabies, and molluscum contagiosum; 2) basophilic, relatively large, complex combinations of viral and cellular material, as in trachoma, psittacosis, and lymphogranuloma venereum. In some instances, inclusion b.'s are known to be infective and probably represent aggregates of virus particles in combination with cellular material, whereas others are apparently not infective and may represent only abnormal products formed by the cell in response to injury. Inclusion b.'s that resemble some of those known to be related to viral infections are occasionally observed in degenerative diseases and in lead poisoning.
b. of incus the main part of the incus that articulates with the malleus and from which the short and long limbs arise.corpus incudis [NA];
infrapatellar fat b. infrapatellar fat-pad
intercarotid b. carotid b
intermediate b. of Flemming midbody
interrenal b.'s distinct paired or unpaired structures in all fishes, which lie in close proximity to the kidney, homologous to the cortical tissue of the mammalian adrenal gland.interrenal glands;
b. of ischium the entire ischium with the exception of the ramus.corpus ossis ischii [NA];
Jaworski's b.'s mucous shreds in the gastric contents in hyperchlorhydria.
Joest b.'s intranuclear inclusion b.'s (Cowdry's type B) produced in certain nerve cells by Borna disease virus.
Jolly b.'s Howell-Jolly b.'s
juxtaglomerular b. a collection of cells around the renal glomerular arterioles that contain cytoplasmic granules, probably composed of renin.periarterial pad;
juxtarestiform b. a medial (smaller) subdivision of the inferior cerebellar peduncle (corpus restiforme) composed of fibers reciprocally connecting the vestibular nuclei with the cerebellum, in particular the latter's nodulus, flocculus, and uvula vermis. It also carries primary sensory fibers from the vestibular ganglia to the cerebellum, as well as cerebellar projections to the rhombencephalic reticular formation and vestibular nuclei.
ketone b. one of a group of ketones that includes acetoacetic acid, its reduction product, beta-hydroxybutyric acid, and its decarboxylation product, acetone; high levels are found in tissues and body fluids in ketosis.acetone b., acetone compound;
Koch's blue b.'s schizonts of Theileria parva, the causative agent of East Coast fever; found principally within endothelial cells of the spleen and lymph nodes.
Kurloff's b.'s palely basophilic, granular inclusions sometimes observed in the cytoplasm of the large mononuclear leukocytes (probably lymphocytes) of guinea pigs and certain other animals.
Lafora b. [MIM*254780] an intraneural intracytoplasmic inclusion b. composed of acid mucopolysaccharides, seen in familial myoclonus epilepsy; a recessive trait.
Lallemand's b.'s 1. old term for small gelatinoid concretions sometimes observed in seminal fluid; 2. old term for Bence Jones cylinders, under cylinder.Trousseau-Lallemand b.'s;
Landolt's b.'s bipolar nerve cells lying between the retinal rods and cones in amphibia, reptiles, and birds.
lateral geniculate b. the lateral one of a pair of small oval masses that protrude slightly from the posteroinferior aspects of the thalamus; its main (dorsal) subdivision serves as a processing station in the major pathway from the retina to the cerebral cortex, receiving fibers from the optic tract and giving rise to the geniculocalcarine radiation to the visual cortex in the occipital lobe.corpus geniculatum laterale [NA], corpus geniculatum externum;
L-D b. Leishman-Donovan b
LE b. the amorphous round b. in the cytoplasm of an LE cell.
Leishman-Donovan b. the intracytoplasmic, nonflagellated leishmanial form of certain intracellular parasites, such as species of Leishmania or the intracellular form of Trypanosoma cruzi; originally used for Leishmania donovani parasites in infected spleen or liver cells in kala azar.amastigote, L-D b;
Lewy b.'s intracytoplasmic inclusion b.'s especially noted in pigmented brainstem neurons and seen in Parkinson's disease.
Lieutaud's b. trigone of bladder
Lindner's b.'s initial b.'s resembling inclusion b.'s found in scrapings of epithelial cells infected with trachoma.
loose b. a solid tissue fragment lying free in a body cavity, especially in a joint or the peritoneal cavity; e.g., joint mice, melon-seed b., rice b.
Luse b.'s collagen fibers with abnormally long spacing (exceeding 1000 Å) between electron-dense bands.
Luys' b. subthalamic nucleus
Mallory b.'s large, poorly defined accumulations of eosinophilic material in the cytoplasm of damaged hepatic cells in certain forms of cirrhosis and marked fatty change especially due to alcoholism.alcoholic hyalin, alcoholic hyaline b.'s;
malpighian b.'s splenic lymph follicles, under follicle
mamillary b. a small, round, paired cell group that protrudes into the interpeduncular fossa from the inferior aspect of the hypothalamus. It receives hippocampal fibers through the fornix and projects fibers to the anterior thalamic nuclei and into the brainstem tegmentum.corpus mamillare [NA], mamillary tubercle of hypothalamus;
b. of mammary gland the principal part of the breast, consisting of glandular tissue and its supporting fibrous tissue. It forms a conical mass converging toward the nipple and is surrounded by adipose tissue.corpus mammae [NA];
b. of mandible the heavy, U-shaped, horizontal portion of the mandible extending posteriorly to the angle where it is continuous with the ramus; it supports the lower teeth.corpus mandibulae [NA];
b. of maxilla the central portion of the maxilla hollowed out by the maxillary sinus; it presents orbital, nasal, anterior, and infratemporal surfaces and supports four processes, frontal, zygomatic, palatine, and alveolar.corpus maxillae [NA];
medial geniculate b. the medial one of a pair of prominent cell groups in the posteroinferior parts of the thalamus; it functions as the last of a series of processing stations along the auditory conduction pathway to the cerebral cortex, receiving the brachium of the inferior colliculus and giving rise to the auditory radiation to the auditory cortex in the superior temporal gyrus.corpus geniculatum mediale [NA], corpus geniculatum internum;
melon-seed b. a small fibrous loose b. in the joints or tendon sheaths.
metachromatic b.'s concentrated deposits consisting primarily of polymetaphosphate and occurring in many bacteria as well as in algae, fungi, and protozoa; m. b.'s differ in staining properties from the surrounding protoplasm. See metachromasia.
Michaelis-Gutmann b. a rounded homogenous or concentrically laminated b., 1 to 10 mu in diameter, containing calcium and iron; found within macrophages in the bladder wall in malakoplakia.
Miyagawa b.'s a term previously used to refer to Chlamydia trachomatis (Miyagawanella lymphogranulomatosis), the elementary b.'s that develop in the intracytoplasmic microcolonies of lymphogranuloma venereum.
molluscum b. a disticntive intracellular spherical b. in the lesions of molluscum contagiosum caused by a member of the family Poxviridae; it consists of degenerated cytoplasm and the virus.molluscum corpuscle;
Mooser b.'s a term used to refer to the rickettsiae found in the exudate (and in tissue) from the tunica vaginalis in endemic typhus fever (caused by Rickettsia typhi).
multilamellar b. cytosome (2)
multivesicular b.'s membrane-bound b.'s, 0.5 to 1.0 mum wide, that occur in the cytoplasm of cells and contain a number of small vesicles; hydrolases (especially acid phosphatase) occur in the matrix.
myelin b. myelin figure
b. of nail the exposed portion of the nail distal to its root.corpus unguis [NA];
Negri b.'s eosinophilic, sharply outlined, pathognomonic inclusion b.'s (2 to 10 mum in diameter) found in the cytoplasm of certain nerve cells containing the virus of rabies, especially in Ammon's horn of the hippocampus.Negri corpuscles;
nerve cell b. the part of the neuron that includes the nucleus but excludes the processes.
neuroepithelial b. a corpuscular aggregate of nonciliated cells containing neurosecretory substance found in normal bronchial epithelium.
Nissl b.'s Nissl substance
nodular b. in fungi, a compact, roughly spherical or squarish structure formed by coiling and twisting of the end of a hypha; considered to be abortive growths toward sexual reproduction.
nu b. nucleosome
nuclear inclusion b.'s See inclusion b.'s.
Odland b. keratinosome
olivary b. oliva
onion b.'s obsolete term for epithelial nest.
pacchionian b.'s arachnoid granulations, under granulation
pampiniform b. epoöphoron
b. of pancreas the part of the pancreas from the point where it crosses the portal vein to the point where it enters the lienorenal ligament.corpus pancreatis [NA];
Pappenheimer b.'s phagosomes, containing ferruginous granules, found in red blood cells in diseases such as sideroblastic anemia, hemolytic anemia, and sickle cell disease; may contribute to spurious platelet counts by electro-optical counters.
para-aortic b.'s small masses of chromaffin tissue found near the sympathetic ganglia along the aorta; they are more prominent during fetal life. The chromaffin cells secrete noradrenalin; chemoreceptive endings monitor levels of blood gases.corpora para-aortica [NA], aortic b.'s, corpus aorticum, glomera aortica, organs of Zuckerkandl, Zuckerkandl's b.'s;
parabasal b. a term formerly equivalent to the DNA kinetoplast, part of the giant mitochondrion of certain parasitic flagellates. The parabasal b. plus the basal b. were previously thought to comprise a kinetoplast, or locomotory apparatus, but kinetoplast is now restricted to part of the DNA giant mitochondrion and parabasal b. is a distinct structure near the nucleus, probably equivalent to the metazoan Golgi apparatus.
paranephric b. a mass of fat lying behind the renal fascia.
paranuclear b. astrosphere
paraphysial b. paraphysis
paraterminal b. subcallosal gyrus
Paschen b.'s particles of virus observed in relatively large numbers in squamous cells of the skin (or the cornea of experimental animals) in variola (smallpox) or vaccinia.
b. of penis the free pendulous portion of the penis, consisting of shaft and glans penis.corpus penis [NA], scapus penis;
perineal b. central tendon of perineum
b. of phalanx the shaft of each phalanx of the hand or foot.corpus phalangis [NA];
Pick's b.'s intracytoplasmic argentophilic inclusion b.'s seen in neurons in Pick's disease.
pineal b. a small, unpaired, flattened body, shaped somewhat like a pine cone, attached at its anterior pole to the region of the posterior and habenular commissures, and lying in the depression between the two superior colliculi below the splenium of the corpus callosum; it is a glandular structure, composed of follicles containing epithelioid cells and lime concretions called brain sand; despite its attachment to the brain, it appears to receive nerve fibers exclusively from the peripheral autonomic nervous system. It produces melatonin.corpus pineale [NA], conarium, epiphysis cerebri, pineal gland, pinus;
Plimmer's b.'s obsolete term for cancer b.'s
polar b. one of two small cells formed by the first and second meiotic division of oocytes; the first is usually released just prior to ovulation, the second not until discharge of the ovum from the ovary; in mammals, the second polar b. may fail to form unless the ovum has been penetrated by a sperm cell.polar cell, polar globule, polocyte;
polyhedral b. an inclusion b. associated with replication of certain insect viruses.
pontobulbar b. a collection of nerve cells in the lower part of the medulla oblongata forming a ridge which crosses the restiform body obliquely.corpus pontobulbare;
posterior quadrigeminal b. inferior colliculus
Prowazek b.'s historic term for either of two types of inclusion b.'s associated with certain diseases: 1) trachoma b.'s; 2) tiny, ovoid, granular forms, frequently in pairs, observed in the cytoplasm and in Guarnieri b.'s in the cutaneous squamous cells of man and animals infected with variola (smallpox) or vaccinia virus; probably the same as Paschen b.'s.
Prowazek-Greeff b.'s trachoma b.'s
psammoma b.'s 1. mineralized b.'s occurring in the meninges, choroid plexus, and in certain meningiomas; composed usually of a central capillary surrounded by concentric whorls of meningocytes in various stages of hyaline change and mineralization; can also occur in benign and malignant epithelial tumors (often papillary) or with chronic inflammation;sand b.'s; 2. corpora arenacea, under corpus 3. calcospherite
psittacosis inclusion b.'s intracytoplasmic chlamydial microcolonies observed in bronchial epithelial cells infected with Chlamydia psittaci.
pubic b. , b. of pubic bone b. of pubis
b. of pubis the flattened medial portion of the pubic bone entering into the pubic symphysis. From it extend the superior and inferior rami.corpus ossis pubis [NA], pubic b., b. of pubic bone;
purine b.'s any purine.
quadrigeminal b.'s See inferior colliculus, superior colliculus.corpora quadrigemina;
Renaut b. subperineurial structure comprised of loosely arranged and randomly oriented collagen fibers in a fine fibrillary material, seen in normal nerve as well as in certain pathologic states.
residual b. a cytoplasmic vacuole (lysosome) containing accumulated particulate products of metabolism, e.g., lipofuscin.
residual b. of Regaud the excess cytoplasm that separates from the spermatozoon during spermiogenesis.
rest b. a small mass of cytoplasm remaining after the nucleus and cytoplasm of the schizont of certain sporozoan protozoa have divided into asexual spores or merozoites.
restiform b. a lateral (larger) subdivision of the inferior cerebellar peduncle composed of a variety of fibers including, but not limited to, olivo-, reticulo-, cuneo-, trigemino-, and dorsal spinocerebellar. See also inferior cerebellar peduncle.corpus restiforme;
b. of rib the shaft of a rib; the portion which extends laterally, anteriorly, and then medially from the tubercle.corpus costae [NA];
rice b. one of the small, loose b.'s found in hygromas, tendon sheaths, and joints.
Rushton b. linear or curved hyaline bodies, presumably of hematogenous origin, found within the epithelial lining of odontogenic cysts.
Russell b.'s small, discrete, variably sized, spherical, intracytoplasmic, acidophilic, hyaline b.'s that stain deeply with fuchsin; they occur frequently in plasma cells in chronic inflammation, where they are believed to consist of gamma-globulin.fuchsin b.'s (1);
sand b.'s psammoma b.'s (1)
Sandström's b.'s See parathyroid gland.
Savage's perineal b. central tendon of perineum
Schaumann b.'s concentrically laminated calcified b.'s found in granulomas, particularly in sarcoidosis.conchoidal b.'s;
sclerotic b.'s vegetative rounded muriform cells of dematiaceous fungi, characteristic of the causal agents of chromoblastomycosis in tissue.copper pennies;
segmenting b. schizont
b. of sphenoid bone the central portion of the sphenoid bone from which the greater and lesser wings and the pterygoid processes arise. The sphenoidal sinuses lie within it.corpus ossis sphenoidalis [NA];
spongy b. of penis corpus spongiosum penis
b. of sternum the middle and largest portion of the sternum, lying between the manubrium superiorly and the xiphoid process inferiorly.corpus sterni [NA], gladiolus, mesosternum, midsternum;
b. of stomach the part of the stomach that lies between the fundus above and the pyloric antrum below; its boundaries are poorly defined.corpus gastricum [ventriculi] [NA];
striate b. the caudate and lentiform (lenticular) nuclei; the striate appearance on section is caused by slender fascicles of myelinated fibers. Histologically, the striate b. can be subdivided into the generally small-celled striatum, consisting of the caudate nucleus and the outer segment of the lentiform nucleus (the putamen), and a large-celled globus pallidus composed of the two segments.corpus striatum [NA];
suprarenal b. suprarenal gland
b. of sweat gland the coiled tubular secretory portion of a sweat gland located in the subcutaneous tissue or deep in the corium and connected to the surface of the skin by a long duct.corpus glandulae sudoriferae [NA];
Symington's anococcygeal b. anococcygeal ligament
b. of talus the large posterior part of the talus forming the trochlea above for articulation with the tibia and fibula and articulating below with the calcaneus.corpus tali [NA];
b. of thigh bone shaft of femur
threshold b. threshold substance
thyroid b. thyroid gland
b. of tibia shaft of tibia
tigroid b.'s Nissl substance
b. of tongue the oral part of the tongue anterior to the terminal sulcus.corpus linguae [NA];
trachoma b.'s distinctive, complex, intracytoplasmic forms found in the conjunctival epithelial cells of persons in the acute phase of trachoma, less frequently in later stages, varying from 1) discrete acidophilic granules (approximately 250 nm in diameter), to 2) irregular clumps of such material embedded in a basophilic matrix, to 3) relatively large basophilic b.'s (approximately 700 to 1000 nm in diameter), to 4) large basophilic b.'s that include discrete, tiny, acidophilic granules.Halberstaedter-Prowazek b.'s, Prowazek-Greeff b.'s;
trapezoid b. a plate of transverse fibers running over the dorsal (deep) border of the pontine nuclei; it is formed by ascending auditory fibers that cross to the opposite side of the brainstem.corpus trapezoideum [NA], trapezoid (4);
Trousseau-Lallemand b.'s Lallemand's b.'s
tuffstone b. membrane-bound electron-dense granules, measuring about 0.5 mum in diameter, found primarily in Schwann cells of patients suffering from metachromatic leukodystrophy; the name alludes to their resemblance to volcanic limestone.
turbinated b. 1. a concha with its covering of mucous membrane and other soft parts;turbinal; 2. inferior nasal concha, middle nasal concha, superior nasal concha, supreme nasal concha
tympanic b. tympanic gland
b. of ulna shaft of ulnacorpus ulnae [NA];
ultimobranchial b. a diverticulum from the fourth pharyngeal pouch of an embryo, regarded by some as a rudimentary fifth pharyngeal pouch and by others as a lateral thyroid primordium; the ultimobranchial b.'s of lower vertebrates contain large amounts of calcitonin; in mammals, the ultimobranchial b.'s fuse with the thyroid gland and are thought to develop into the parafollicular cells. See also ultimobranchial pouch.
b. of urinary bladder the portion of the bladder between the apex and fundus.corpus vesicae urinariae [NA];
b. of uterus the part of the uterus above the isthmus, comprising about two thirds of the non-pregnant organ.corpus uteri [NA];
vaccine b.'s old term pertaining to intracellular b.'s that were erroneously thought to be forms in the life cycle of a protozoan organism, Cytorrhyctes vaccinae, postulated to be the causal agent of vaccinia.
Verocay b.'s hyalinized acellular areas composed of reduplicated basement membrane outlined by opposing rows of prarallel nuclei; seen microscopically in neurilemomas.
b. of vertebra the main portion of a vertebra anterior to the vertebral canal, as distinct from the arches.corpus vertebrae [NA];
Virchow-Hassall b.'s thymic corpuscle
vitreous b. a transparent jelly-like substance filling the interior of the eyeball behind the lens of the eye; it is composed of a delicate network (vitreous stroma) enclosing in its meshes a watery fluid (vitreous humor).corpus vitreum [NA], hyaloid b., vitreous (2), vitreum;
Weibel-Palade b.'s rod-shaped bundles of microtubules seen by electron microscopy in vascular endothelial cells.
wolffian b. mesonephros
Wolf-Orton b.'s intranuclear inclusion b.'s seen in cells of malignant neoplasms, especially those of glial cell origin.
X b. obsolete term for Langerhans' granule.
Y b. a single fluorescent spot originating in the long arm of the Y chromosome and visible in somatic nuclei of buccal smears.
yellow b. corpus luteum
zebra b. metachromatically staining membrane-bound granules, measuring 0.5-1 mum in diameter and containing lamellae with a 5.8 nm spacing, reported in Schwann cells and macrophages of patients suffering from metachromatic leukodystrophy.
Zuckerkandl's b.'s para-aortic b.'s
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