reagin

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re·a·gin

 (rē-ā′jĭn)
n.
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.
re′a·gin′i·cal·ly adv.

reagin

(ˈrɪədʒɪn)
n
(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)

n.
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]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.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
IgE, immunoglobulin E - one of the five major classes of immunoglobulins; present primarily in the skin and mucous membranes
Translations

re·a·gin

n. reagina, anticuerpo usado en el tratamiento de alergias que estimula la producción de histamina.