Question

1. what cells play a role in stopping cancers such as those caused by hepatitis b and human papilloma virus?

a. cytotoxic t cell
b. dendritic cells
c. macrophages
d. mast cell

Explanation:

Cytotoxic T - cells can recognize and kill virus - infected cells and cancer cells. Dendritic cells are mainly involved in antigen presentation. Macrophages are phagocytic cells that can engulf pathogens and debris. Mast cells are related to allergic reactions and inflammation. In the context of stopping virus - related cancers, cytotoxic T - cells play a key role.

Answer:

a. cytotoxic T cell