ANTIGEN
\ˈantɪd͡ʒˌɛn], \ˈantɪdʒˌɛn], \ˈa_n_t_ɪ_dʒ_ˌɛ_n]\
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By DataStellar Co., Ltd
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Any substance which, when introducen into the animal organism, causes the productiod of an antibody; hatpin (2).
By Stedman, Thomas Lathrop
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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
premonstratensians
- Regular instituted 1120, St. Norbert (whence Norbertines), at Premonstratum [L. , pointed out, it was said, by the Virgin], in Picardy. They were also called White Canons, from colour of their dress.