Which of the following is true about the innate immune system's memory?

Which of the following is true about the innate immune system's memory?

• A. It has immunological memory
• B. It has short-term memory
• C. It has no immunological memory
• D. It has lifelong memory

Answer: (C)

Memory means a tailored, faster response upon re-exposure due to persistent memory cells. The innate immune system provides immediate, non-specific defense and does not generate lasting, antigen-specific memory. In contrast, adaptive immunity creates memory B and T cells that persist and enable a quicker, stronger response when the same pathogen is encountered again. So, in the usual sense, the innate immune system has no immunological memory. (There is talk of trained immunity, where innate responses are briefly primed to respond more strongly, but this isn’t true immunological memory.)

Memory means a tailored, faster response upon re-exposure due to persistent memory cells. The innate immune system provides immediate, non-specific defense and does not generate lasting, antigen-specific memory. In contrast, adaptive immunity creates memory B and T cells that persist and enable a quicker, stronger response when the same pathogen is encountered again. So, in the usual sense, the innate immune system has no immunological memory. (There is talk of trained immunity, where innate responses are briefly primed to respond more strongly, but this isn’t true immunological memory.)