Multiple Choice
Changes in the immune system that accompany aging include
A) T cells becoming less responsive to antigens.
B) more cytotoxic T cells responding to infections.
C) increased numbers of T helper cells.
D) higher levels of antibodies after initial exposure to antigens.
E) enlargement of the thymus and increased levels of circulating thymic hormones.
Correct Answer:
Verified
Correct Answer:
Verified
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