A cell that produces a rapid antibody response against a foreign protein when it is encountered years after the first encounter is a(n)
A) memory B cell.
B) memory T cell.
C) cytotoxic T cell.
D) plasma cell.
E) antigen-presenting cell.

Question

Quizplus · Accepted Answer

Memory B cells are responsible for producing a rapid antibody response when a previously encountered antigen is encountered again years later. They are able to do this because they "remember" the specific antigen and can quickly produce the appropriate antibodies to fight off the invader. Memory T cells, cytotoxic T cells, and antigen-presenting cells are all involved in the immune response, but they do not directly produce antibodies like memory B cells do. Plasma cells produce antibodies, but they do not have the ability to "remember" previous encounters with specific antigens.

A Cell That Produces a Rapid Antibody Response Against a Foreign