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HIV/AIDS Glossary

CXCR4

Synonym(s): Chemokine Receptor 4, Fusin

A protein on the surface of certain immune system cells, including CD4 T lymphocytes (CD4 cells). CXCR4 can act as a coreceptor (a second receptor binding site) for HIV when the virus enters a host cell.

Related Term(s): Coreceptor, Fusion, Life Cycle

Image(s):

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HIV binds to a host CD4 cell via coreceptors.

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