Definition of CXCR4 CXCR4: A chemokine receptor found on a wide variety of cells that serves as the coreceptor for HIV. HIV strains that use CXCR4 are referred to as X4 viruses.
CXCR4: A chemokine receptor found on a wide variety of cells that serves as the coreceptor for HIV. HIV strains that use CXCR4 are referred to as X4 viruses.
