Which of these is NOT true of memory T cells? They are long-lived They remember past exposure to pathogens They act rapidly in response to a recognized antigen They are short-lived QUESTION 7 Why are regulatory T cells important? They help to recognize foreign pathogens They hold memories of past exposure to pathogens They prevent excessive response of the immune system by suppressing other T cells They are antigen-presenting cells for B cells.

1. Which of these is NOT true of memory T cells? They are long-lived They remember past
exposure to pathogens They act rapidly in response to a recognized antigen They are short-lived
QUESTION 7 Why are regulatory T cells important? They help to recognize foreign pathogens
They hold memories of past exposure to pathogens They prevent excessive response of the
immune system by suppressing other T cells They are antigen-presenting cells for B cells