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1. |
Numerous antibodies can be prepared, against one antigen, each binds to unique epitopes. How is this antibody diversity generated? |
A. | By rearrangements of the DNA encoding the variable regions of the heavy and light chains |
B. | By the combination of different heavy and light chains that form the antigen binding site |
C. | Antibody proteins can physically change their shape to bind different epitopes |
D. | Both (a) and (b) |
Answer» E. | |