ANTIGEN
\ˈantɪd͡ʒˌɛn], \ˈantɪdʒˌɛn], \ˈa_n_t_ɪ_dʒ_ˌɛ_n]\
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By DataStellar Co., Ltd
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Substances which, when injected into an animal, cause a series of physiologico-chemical changes resulting in the formation of antibodies in the blood.
By Henderson, I. F.; Henderson, W. D.
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Any substance which produces special antibodies by one or many injections into a susceptible animal, such as bacteria, red blood corpuscles or other foreign cells. Blood serum, milk, and bacterial extracts are also antigens, because they produce specific precipitins, but inorganic substances, and such inorganic materials as alkaloids, do not produce antagonistic bodies and are not antigens. Diphtheria and tetanus toxins, snake venoms, and ricin are antigens.[Gr.]
By Smith Ely Jelliffe
Word of the day
Dopamine Acetyltransferase
- An enzyme that catalyzes the of groups from acetyl-CoA to arylamines. They have wide specificity for aromatic amines, particularly serotonin, and can also catalyze acetyl transfer between arylamines without CoA. EC 2.3.1.5.