Final answer:
CD4 Helper T cells are adaptive immune cells that release cytokines and regulate the activities of other immune cells.
Step-by-step explanation:
The CD4 Helper T cell is an adaptive immune cell. It is involved in the adaptive immune response and plays a crucial role in coordinating and regulating the activities of other immune cells. CD4 Helper T cells release cytokines that help activate cytotoxic T cells, B cells, and macrophages, and they also differentiate into different subtypes based on the specific cytokines they are exposed to.