Clonal selection
A. determines the pool of mature leukocytes that will be stimulated by macrophages.
B. requires the activation of natural killer cells.
C. describes the proliferation of B and T lymphocytes after they have been activated by an antigen.
D. requires the presence and activation of complement.
Answer:C
Clonal selection
A. determines the pool of mature leukocytes that will be stimulated by macrophages. B. requires the activation of natural killer cells. C. describes the proliferation of B and T lymphocytes after they have been activated by an antigen. D. requires the presence and activation of complement.