Antibody

Definition of Antibody

An´ti`bod`y Pronunciation: ăn´tĭ`bǒd`ŷ

n.	1.	(Med., Physiol. Chem.) Any of various bodies or substances in the blood which act in antagonism to harmful foreign bodies, as toxins or the bacteria producing the toxins. Normal blood serum apparently contains various antibodies, and the introduction of toxins or of foreign cells also stimulates production of their specific antibodies by the immune system.
	2.	(Med., Physiol. Chem.) more narrowly, any of the immunoglobulins present in the blood serum or other body fluids of an animal, which reacts with a specific antigenic substance, whether the antibody was produced as a consequence of the stimulus provided by the antigen, or was pre-existing prior to exposure of the organism to the antigen.

Related Words

Rh factor, Rh-negative, Rh-positive, Rh-type, Rhesus factor, acquired immunity, active immunity, agglutinin, allergen, anaphylactin, antiantibody, antigen, antiserum, antitoxic serum, antitoxin, antivenin, arterial blood, artificial immunity, blood, blood bank, blood cell, blood count, blood donor, blood donor center, blood group, blood grouping, blood picture, blood platelet, blood pressure, blood serum, blood substitute, bloodmobile, bloodstream, circulation, clinical dextran, congenital immunity, dextran, erythrocyte, familial immunity, globulin, gore, grume, hematics, hematologist, hematology, hematoscope, hematoscopy, hemocyte, hemoglobin, hemometer, humor, ichor, immunity, immunization, incomplete antibody, inherent immunity, inherited immunity, interferon, isoantibody, leukocyte, lifeblood, natural immunity, neutrophil, nonspecific immunity, nonsusceptibility to disease, opsonic immunity, opsonin, passive immunity, phagocyte, phagocytic immunity, plasma, plasma substitute, precipitin, racial immunity, red corpuscle, resistance, serum, specific immunity, toxin-antitoxin immunity, type O, venous blood, white corpuscle

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