Question

Development of a secondary immune response is based on populations of

• A. Memory cells
• B. Effector cytotoxic 1-cells
• C. Mast cells
• D. Effector B-cells

Answer 1

Answer: (A)

Memory cells

Secondary immune response occurs when the person is second time exposed to the same antigen. It is based on the growth of memory cells, these are the cells which can recognise the pathogen that has previously infected the body. These are derived from the B or T- lymphocytes cells.

So, the correct option is 'memory cells'.