Which cells can be activated by direct contact with virus-infected cells?
A)helper T and helper B cells
B)memory T and memory B cells
C)cytotoxic T and memory B cells
D)cytotoxic T and natural killer cells
E)helper T and plasma cells

Question

Quizplus · Accepted Answer

Cytotoxic T cells and natural killer (NK) cells are able to recognize and directly kill virus-infected cells through a process called cell-mediated cytotoxicity. Helper T and B cells play a role in the immune response, but they are not directly activated by contact with virus-infected cells. Memory T and B cells are not primary effector cells and are not activated by direct contact with virus-infected cells. Helper T and plasma cells secrete antibodies and are not directly activated by contact with virus-infected cells.

Which Cells Can Be Activated by Direct Contact with Virus-Infected