- Also called Wassermann antibody. an antibody formed in response to syphilis and reactive with cardiolipin in various blood tests for the disease.
- an antibody found in certain human allergies, as hay fever and asthma.
Origin of reagin
1910–15; < German Reagin, equivalent to reag(ieren) to react + -in -in2
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- 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
- An antibody found in the blood of individuals having a genetic predisposition to allergies such as asthma and hay fever.
- A substance present in the blood of individuals having a positive serological test for syphilis.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.