Which statement best describes the cell type involved in regulating adaptive immunity?

Which statement best describes the cell type involved in regulating adaptive immunity?

• A. It is a lymphocyte involved in regulation of adaptive immunity.
• B. It is a platelet involved in clotting.
• C. It is a neutrophil primarily involved in acute inflammation.
• D. It is an erythrocyte responsible for oxygen transport.

Answer: (A)

Adaptive immunity is governed by lymphocytes, especially those that regulate responses to keep them in check. Regulatory T cells are a type of lymphocyte that modulates the immune response, preventing excessive activation and autoimmunity. That makes a lymphocyte involved in regulation the best description of the cell type in this question. Platelets are for clotting, neutrophils drive acute inflammation as part of innate immunity, and erythrocytes carry oxygen—none of these are primary regulators of adaptive immunity.

Adaptive immunity is governed by lymphocytes, especially those that regulate responses to keep them in check. Regulatory T cells are a type of lymphocyte that modulates the immune response, preventing excessive activation and autoimmunity. That makes a lymphocyte involved in regulation the best description of the cell type in this question. Platelets are for clotting, neutrophils drive acute inflammation as part of innate immunity, and erythrocytes carry oxygen—none of these are primary regulators of adaptive immunity.