IMMUNOLOGY

Detailed explanation-1: -An immunogen can be defined as a complete antigen which is composed of the macromolecular carrier and epitopes (determinants) that can induce immune response. An explicit example is a hapten. Haptens are low-molecular-weight compounds that may be bound by antibodies, but cannot elicit an immune response.

Detailed explanation-2: -(1) The immunogenicity of glycoproteins is best illustrated by the A and B blood group antigens and the Rh antigens. (2) The A and B substances are strong immunogens, and the immune response they induce is to the carbohydrate epitope of the molecule.