Question

Fragments of antigens are held at the surface of antigen presenting cells by _________________

(a) histones

(b) antibodies

(c) major histocompatibility complex

(d) epitope

Answer 1

The correct answer is (c) major histocompatibility complex

Explanation: Fragments of antigens are held at the surfaces of antigen presenting cells (APCs) with the help of MHC (major histocompatibility complex) molecules. The T lymphocytes are activated with the help of antigen presenting cells.