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| CD4 A protein on the surface of certain leukocytes. Helper T cells are among the cell types that possess CD4. CD4 is involved in the binding of HIV to its host cells.
Read more about this term in the Online Textbook: HIV and AIDS: The Structure and Life Cycle of HIV Related Terms: None Related Images: Human immunodeficiency virus life cycle HIV structure and infective ability Related Animations: HIV Infection View QuickTime Movie HIV Receptors View Animation Still
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