Helper T cells do all of the following except
A) trigger B-cell division, plasma cell maturation, and antibody production.
B) provide a rapid response to a future exposure to the antigen.
C) enhance production of memory and cytotoxic T cells.
D) attract macrophages to the affected area.
E) enhance nonspecific defenses.
B
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Why is the sodium-potassium pump so important in the animal kingdom?
What will be an ideal response?