Definitions for "Reagin"
An antibody that reacts in various serologic tests for syphilis.
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
an antibody in the blood of an individual with atopic allergy that is able to sensitize the skin of a normal individual