The two major functional classes of effector T lymphocytes are:
A)Helper T lymphocytes and cytotoxic T lymphocytes
B)Natural killer cells and cytotoxic T lymphocytes
C)Memory T cells and effector T cells
D)Helper cells and antigen-presenting cells
E)Cytotoxic T lymphocytes and target cells

Question

Quizplus · Accepted Answer

T cells can be classified into effector subsets that perform different effector functions.Most effector T cells are either helper T lymphocytes,which enhance the responses of other immune cells including phagocytes and B cells to infections,or cytotoxic T lymphocytes,which directly kill infected cells.Natural killer cells are not T lymphocytes.Antigen-presenting cells usually are not T cells.Memory T cells are not effector T cells.

The Two Major Functional Classes of Effector T Lymphocytes Are