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serum, pl. serumssera (ser´um, -umz, -a)
1. A clear watery fluid, especially that moistening the surface of serous membranes, or exuded in inflammation of any of those membranes. 2. The fluid portion of the blood obtained after removal of the fibrin clot and blood cells, distinguished from the plasma in circulating blood. Sometimes used as a synonym for antiserum or antitoxin. [L. whey]
anticomplementary s.s. that destroys or inactivates complement.
antiepithelial s.an antiserum (cytotoxin) for epithelial cells.
antilymphocyte s. (ALS) antiserum against lymphocytes, used to suppress rejection of grafts or organ transplants; when used in man, the globulin fraction of the heterologous s. (prepared in horse or other animals) is usually used in conjunction with other immunosuppressive agents (drugs or chemicals) and for a limited period of time.antilymphocyte globulin;
antirabies s.a sterile solution containing antibodies obtained from the blood s. or plasma of a healthy animal, or human, that has been immunized against rabies by means of vaccine; administered immediately after severe or multiple bites by domestic animals suspected to be rabid and in all wild animal bites, to be followed by a regimen of rabies vaccine.
antireticular cytotoxic s.an antiserum specific for cells of the reticuloendothelial system.
antitoxic s.an antitoxin.
bacteriolytic s.an antiserum (bacteriolysin) that sensitizes a bacterium to the lytic action of complement.
blood s. See serum (2) .
convalescent s.s. from patients recently recovered from a disease; useful in preventing or modifying by passive immunization the same disease in exposed susceptible individuals.
Coombs' s.antihuman globulin
dried human s.s. prepared by drying liquid human s. by freeze-drying or by any other method that will avoid denaturation of the proteins and will yield a product readily soluble in a quantity of water equal to the volume of liquid human s. from which it was prepared.
foreign s.a s. derived from an animal and injected into an animal of another species or into humans.
human s. See dried human s., normal human s.
human measles immune s.obtained from the blood of a healthy person who has survived an attack of measles.measles convalescent s;
human pertussis immune s.the sterile s. prepared from the pooled blood of healthy adult human beings who have received repeated courses of phase I pertussis vaccine; administered intravenously or intramuscularly for the prophylaxis or treatment of whooping cough.
human scarlet fever immune s.scarlet fever convalescent s., obtained from healthy persons who have survived an attack of scarlet fever.
hyperimmune s.antisera with a high antibody titer produced by repeated injections of antigens.
inactivated s.s. that has been heated 50°C for 30 minutes to destroy the lytic activity of complement.
liquid human s.the pool of fluids separated from blood withdrawn from human subjects and allowed to clot in the absence of any anticoagulant; not more than 10 separate donations are pooled; the contributions from donors of A, O, and either B or AB groups are represented in approximately the ratio 9:9:2.
measles convalescent s.human measles immune s
muscle s.the fluid remaining after the coagulation of muscle plasma and the separation of myosin.
nonimmune s.a s. from a subject that is not immune; a s. that is free of antibodies to a given antigen.
normal s.a nonimmune s., usually with reference to a s. obtained prior to immunization.
normal horse s.the sterile and filtered s. of a healthy, unvaccinated horse.
normal human s.sterile s. obtained by pooling approximately equal amounts of the liquid portion of coagulated whole blood from eight or more persons who are free from any disease transmissible by transfusion.
polyvalent s.an antiserum obtained by inoculating an animal with several different antigens or species or strains of bacteria.
pooled s., pooled blood s.the mixed s. from a number of individuals.
salted s.salted plasma
specific s.a monovalent antiserum, i.e., one obtained by inoculating an animal with one antigen or species or strain of bacteria.
thyrotoxic s.an antiserum obtained by injecting into animals the nucleoproteins of the thyroid gland.
truth s.colloquialism for a drug, such as amobarbital sodium or thiopental sodium, intravenously injected for the purpose of eliciting information from the subject under its influence; a misnomer because the subject's revelations may or may not be factually true, and its legal status and use is questionable.
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