ALLERGEN
\ˈaləd͡ʒən], \ˈalədʒən], \ˈa_l_ə_dʒ_ə_n]\
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By J.H. Kenneth
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Anything that causes an allergic reaction. A person must be allergic to the substance to hav a reaction. The body fights this foreign substance. AKA antigen.
By Henry Campbell Black
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The antigen producing allergy or anaphylaxis.
By Smith Ely Jelliffe
Word of the day
Snake's-head
- Guinea-hen flower; -- so called in England because its spotted petals resemble the scales of a snake's head.