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Related to CD receptor: cluster of differentiation 4
Any of the markers on T lymphocytes and other white blood cells that, along with major histocompatibility complex (MHC) genes, is responsible for the recognition of antigens. More than 100 receptor molecules have been identified. CD4 receptors on T4 lymphocytes are the sites to which HIV binds, producing infection.See: AIDS; cluster of differentiation
See also: receptor