CD4-positive T lymphocyte
Pronunciation: (… PAH-zih-tiv … LIM-foh-site)
A type of immune cell that stimulates killer T cells, macrophages, and B cells to make immune responses. A CD4-positive T lymphocyte is a type of white blood cell and a type of lymphocyte. Also called helper T cell.
Source: NCI Dictionary of Cancer Terms2009-02-13 Date last modified: 2009-02-05