Which areas of an antigen are recognized by lymphocytes so that the cells can respond?

A) Major histocompatibility complexes
B) Antigenic determinants
C) T-cell receptors
D) Epitopes
E) Both "Antigenic determinants" and "Epitopes" are correct.

Antigenic Determinants

Specific parts of a molecule that are recognized by the immune system, critical for the specificity of immune responses.

Epitopes

Specific parts of an antigen that are recognized by the immune system, specifically by antibodies, B cells, or T cells.

Lymphocytes

A subtype of white blood cells involved in the immune response, including B cells, T cells, and natural killer cells.