Multiple choice

An antigen is a substance which provokes an adaptive immune response in the body. The antigen moiety on an antigen-presenting cell identified by the alpha beta T-cell receptor is

  1. native protein antigen plus major histocompatibility complex (MHC) molecule

  2. processed (peptide) antigen plus MHC

  3. processed peptide antigen

  4. native antigen

  5. only MHC

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The peptide in the MHC groove is derived from intracellular proteins, either endogenous or exogenously derived.