Which of the following cell types initiates a secondary immune response?

Question

Quizplus · Accepted Answer

Memory cells are the cells that initiate a secondary immune response. This is because memory cells are formed as a result of the primary immune response to a particular antigen, and they "remember" the antigen. When the same antigen is encountered again, memory cells quickly activate and differentiate into effector cells, leading to a faster and stronger secondary immune response. Natural killer cells are not involved in the adaptive immune response and do not have memory. Effector cells are the cells that carry out the immune response, but they are not the cells that initiate it. Plasma cells are effector cells that secrete antibodies during the primary immune response, but they do not initiate the secondary immune response.

Which of the Following Cell Types Initiates a Secondary Immune