Question

How do memory cells develop?

A) upon reinfection, memory centers in the brain send signals to the bone marrow to induce T cell and B cell differentiation
B) T and B cells from the primary response persist and become reactivated
C) innate cells are trained to activate new T and B cells more quickly with secondary infection
D) T and B cells from the primary infection slowly mutate their receptors over time, priming themselves for the secondary response

Answer 1

Memory cells develop through the process of immunological memory. During the primary immune response, a subset of naive B and T cells differentiate into memory cells with the same antigen specificities. These memory cells provide a more rapid and effective immune response upon reexposure to the same pathogen.

Step-by-step explanation:

The development of memory cells in the immune system occurs through the process of immunological memory. During the primary immune response, plasma cells and differentiated T cells increase and plateau over time. A subset of the naive B and T cell populations differentiate into memory B and T cells with the same antigen specificities. These memory cells circulate in the body and are primed to act rapidly upon reexposure to the same pathogen, resulting in a more rapid and effective secondary immune response.