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1. An antibody found in the blood of individuals having a genetic predisposition to allergies.
2. A substance present in the blood of individuals having a positive serological test for syphilis.
re′a·gin′ic (rē′ə-jĭn′ĭk) adj.
(Biochemistry) immunol a type of antibody that is formed against an allergen and is attached to the cells of a tissue. The antigen–antibody reaction that occurs on subsequent contact with the allergen causes tissue damage, leading to the release of histamine and other substances responsible for an allergic reaction
[C20: from German reagieren to react + -in]
re•a•gin(riˈeɪ dʒɪn, -gɪn)
1. an antibody formed in response to syphilis in various blood tests for the disease.
2. an antibody found in certain human allergies, as hay fever and asthma.
[1910–15; < German Reagin=reag(ieren) to react + -in -in1]
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|Noun||1.||reagin - an immunoglobulin E that is formed as an antibody against allergens (such as pollen); attaches to cell membranes causing the release of histamine and other substances responsible for the local inflammation characteristic of an allergy|
n. reagina, anticuerpo usado en el tratamiento de alergias que estimula la producción de histamina.