Changes in the Immune System That Accompany Aging Include

question 99

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.

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