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Dictionary of Cancer Terms

View in Spanish: Linfocito T CD4 positivo

CD4-positive T lymphocyte (…PAH-zuh-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: National Cancer Institute Dictionary of Cancer Terms, available at www.cancer.gov/dictionary.