Definitions Related to Antigens
•Definitions:
•1.Antigen
•an antigen is any molecule that is capable of inducing an immune response and/or binding with an antibody.
•2.Antigenic determinant or epitope
•the smallest portion of the antigen that is recognized by T and B lymphocytes and also binds with the specific antibody idiotope.
•3.idiotope
•the site on the antibody that is specific for the epitope.