immunoglobulin E(redirected from Reaginic antigen)
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Related to Reaginic antigen: reaginic antibody
immunoglobulin E[‚im·yə·nō‚gläb·yə·lən ′ē]
A class of immunoglobulins present in minute amounts in normal human serum that is active against parasites and acts as a mediator of immediate hypersensitivity. Abbreviated IgE. Also known as reagin.