reagin

(rē-ā-jĭn, -gĭn)

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[Ger. Reagin, fr. reag(ieren), to react + -in]
A type of immunoglobulin E (IgE) present in the serum of atopic individuals that mediates hypersensitivity reactions.
SYN: SEE: sensitizing antibody
reaginic (rē-ă-jin′ĭk, -gin′)
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, adj.

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