principles of immune response

Question 1

adaptive immunity: central process of clonal selection

Answer 1

lymphocytes that meet recognisable antigen will proliferate and survive to become effector lymphocytes; all others (naïve polyclonal) die out; when antigen removed, most lymphocytes die out; some survive as memory cells, so re-exposure to previous antigen leads to more rapid and effective secondary immune response

Question 2

purpose of clonal selection

Answer 2

allows memory so re-exposure is more rapid and effective