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  Antigen
  Antigenic Determinant
  Determinant
  Epitope
  Hapten Multimedia
from HONselect:


 Antigens
 Epitopes
 Haptens

Antigen (Ag)

A substance that elicits an antibody response. See also : Allergen

Determinant
Antigenic Determinant

Part of the antigen molecule which binds to an antibody-combining site or to a T-cell receptor ( TCR ).

Epitope

An alternative term for an antigenic determinant. These are particular chemical groups on a molecule that are antigenic, i.e. that elicit a specific immune response.

Hapten

A compound, usually of low molecular weight, that is not itself immunogenic but, when bound to a carrier protein or cell, becomes immunogenic and induces antibodies , which can bind the hapten either alone or in the presence of a carrier.

 

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  http://www.hon.ch/Library/Theme/Allergy/Glossary/antigen.html Last modified: Fri Jun 28 2002