Question 41 • TX-Biology B-CR
First, the B cell binds its specific antigen and displays antigen fragments on MHC-II molecules (5). A helper T cell recognizes the presented antigen (1) and secretes interleukin-2 (4), which helps activate the B cell. The activated B cell divides into memory and effector B cells (2), and the effector cells produce large numbers of antigen-specific antibodies (3).
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