Which Cells of the Immune System Produce an Interleukin, Which

Multiple Choice

Which cells of the immune system produce an interleukin, which is thought to stimulate epithelial cells to recruit phagocytes and thereby prevent the entry of extracellular bacteria and fungi into the body?

A) T_H1 cells
B) T_H2 cells
C) cytotoxic T lymphocytes
D) T_H17 cells
E) regulatory T lymphocytes