What is the Cell That is Responsible for a Secondary

Question

What is the cell that is responsible for a secondary antibody response to an antigen?
A) Memory B cell
B) Plasma cell
C) Cytotoxic T cell
D) All of the above are responsible

Accepted Answer

Memory B cells are responsible for a secondary antibody response to an antigen. They are produced during the primary immune response and can quickly differentiate into plasma cells upon re-exposure to the same antigen. Cytotoxic T cells are not involved in antibody responses.