Question: A 55-year-old man is diagnosed with a condition that affects both humoral and cell-mediated immunity. He has a reduced population of T-helper cells. What is

A 55-year-old man is diagnosed with a condition that affects both humoral and cell-mediated immunity. He has a reduced population of T-helper cells. What is the primary role of T-helper cells in the immune system? Produce antibodies O Activate and regulate other immune cells O Directly kill infected cells Maintain immune tolerance

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