HIV/AIDS Glossary


A protein that is located inside or on the surface of a cell and that binds to a specific substance, such as a hormone, antigen, virus, or neurotransmitter. The binding of the substance to the cell receptor causes a change in the activity of the cell. In order to enter a host cell, HIV must first bind to receptors on the host cell.

Related Term(s): CD4 Receptor

Search the Glossary

What's this?


AIDSinfo Glossary App

Download Glossary