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CD4 T LymphocyteAudio (En español)

Also known as: CD4 Cell, Helper T Cell

A type of lymphocyte. CD4 T lymphocytes (CD4 cells) help coordinate the immune response by stimulating other immune cells, such as macrophages, B lymphocytes (B cells), and CD8 T lymphocytes (CD8 cells), to fight infection. HIV weakens the immune system by destroying CD4 cells.

See Related Term(s):  CD4 Count, CD4 Percentage, Lymphocyte, T Lymphocyte