Questions: Multiple Choice Question Memory B and memory T cells respond to antigens during a immune response. primary secondary

The answer is the second one: secondary.

Explanation:

• Memory B and memory T cells are part of the adaptive immune system. They are generated after an initial exposure to an antigen during a primary immune response.
• During a secondary immune response, these memory cells are reactivated upon re-exposure to the same antigen. This response is typically faster and more robust than the primary response because the immune system has already been "primed" by the initial exposure.
• Therefore, memory B and T cells are specifically involved in the secondary immune response, not the primary one.