Interleukin-12 regulates differentiation of these cells, while interleukin-4 stimulates the production of one type of them.
The regulatory type of these cells act as suppressors of other types of these cells. One variety of these cells expresses CXCR5 and can trigger germinal center formation. Interleukin-12 regulates differentiation of these cells, while interleukin-4 stimulates the production of one type of them. These cells are activated when their receptors interact with antigens bound to MHC complexes. These cells are classified based on whether they are CD4 or CD8 positive, both types of which mature in the thymus. One type of them is infected by the HIV virus. For 10 points, name these white blood cells, which are divided into cytotoxic and helper varieties.
The regulatory type of these cells act as suppressors of other types of these cells.
T cells [prompt on "lymphocyte"]