Helper T Cells and Regulatory T Cells ________

question 7

Multiple Choice

Helper T cells and regulatory T cells ________.

• A) include approximately 10-15 percent of the circulating lymphocytes
• B) can differentiate into plasmocytes when appropriately stimulated
• C) are solely responsible for the phenomenon in the body known as "humoral immunity"
• D) control the activation and activity of B cells
• E) are responsible for the production and secretion of antibodies

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