Which of the Following Statements Is True of the Immune

question 118

Multiple Choice

Which of the following statements is true of the immune system and stress?

• A) NK cells are a type of white blood cell that is more likely to be present in high-stress circumstances.
• B) Higher levels of NK cells in stressful situations indicate a weakened immune system.
• C) Immune system functioning increases with normal aging.
• D) Aerobic fitness is related to the presence of a lower level of senescent T cells.

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