Related words. 1  high technology noun. 2  push technology noun. 3  technology therapy noun. 4  appropriate technology noun. 5  information technology noun. 6  intermediate technology noun. 7  clean technology noun at cleantech.8  blind someone with science/technology phrase. 9  modern technology. 10  the frontiers of knowledge/science/technology.0% of the time, speakers of English use just 7,500 words in speech and writing. These words appear in red, and are graded with stars.
Two receptors, CD4 and a co-receptor act sequentially to trigger fusion of viral and cellular membranes and confer virus entry into cells. For HIV-1, the chemokine receptor CCR5 is the predominant co-receptor exploited for transmission and replication in vivo.
Infection of a host cell requires that the cell have a surface protein that can serve as a receptor for the envelope protein of the retrovirus. The envelope protein of HIV-1 binds to. CD4 molecules. It is this property that enables the virus to invade CD4+ T cells (and certain other cells that express CD4).