A Healthy Immune System Destroys Cancer Cells With

Question

A healthy immune system destroys cancer cells with
A)tumor-specific antigens.
B)CTLs.
C)CTLs and activated macrophages.
D)activated macrophages.
E)CD⁺ T cells.

Accepted Answer

Cancer cells can be targeted by cytotoxic T lymphocytes (CTLs) and activated macrophages. These effector cells can recognize and destroy cancer cells that present tumor-specific antigens on their surface. CD⁺ T cells can also contribute to anti-tumor immunity, but they work in conjunction with CTLs and macrophages. Therefore, option C, which includes both CTLs and activated macrophages, is the best choice.