Which of the Following Accurately Describes an Antigen

Multiple Choice

Which of the following accurately describes an antigen?

A) The strength of binding between a paratope and an epitope
B) A protein made by B-lymphocytes when molecules are recognized as non-self molecules
C) A type of molecule that creates an antibody-mediated immune response
D) Responses that bring leukocytes and chemokines to an infection site