The first of seven steps in the HIV life cycle HIV binds to the CD 4 | receptor

μ-recéptor
pharma.	mu receptor; mu-opioid receptor; μ-opioid receptor; μ-receptor

and a coreceptor on the host cell causing the viral envelope to fuse with the host cell membrane This fusion allows HIV to release HIV | RNA

RNA
life.sc. chem.	ribonucleic acid

and HIV enzymes such as reverse transcriptase and integrase into the host cell