FIG. 2.
Incorporation of Nef proteins into virions. HIV-1 WT and nef mutant viruses were prepared in HeLa cells transfected with the respective proviral DNA clones. Virus lysates containing an equal amount of p24 capsid antigen were analyzed by Western blotting with a rabbit anti-Nef antiserum (A) and a human anti-HIV-1 antiserum (B).