What is the role of regulatory T cells in the immune system?

Question

What is the role of regulatory T cells in the immune system?

1. A. To activate B cells
2. B. To suppress immune responses (Correct answer)
3. C. To produce antibodies
4. D. To enhance phagocytosis

Correct Answer

Option B — To suppress immune responses

Detailed Solution & Explanation

The correct answer is To suppress immune responses.

Key Points

• Regulatory T cells (Tregs, CD4+CD25+FoxP3+) suppress immune responses to prevent autoimmunity and excessive immune activation.
• They maintain self-tolerance.