Question

Lymphocytes that activate B-cells and T-cells are ______.

Options

• macrophages

• cytotoxic T-cells

• activator B-cells

• helper T-cells

Answer 1

Lymphocytes that activate B-cells and T-cells are helper T-cells.

Explanation:

Helper T-cells activate both B-cells and cytotoxic T-cells by producing specific regulatory factors and lymphokines. They play a crucial role in initiating and coordinating the immune response by helping B-cells produce antibodies and activating cytotoxic T-cells to destroy infected cells. Macrophages are phagocytic cells, and activator B-cells is not a commonly used term for any lymphocyte subtype involved in activation.