Phenotypic characterization of natural Vpu variants with respect to viral replication.

<p>A) HeLa cells were transfected with an equal amount of various proviral DNA constructs and total virus released in culture supernatant was quantitated using HIV indicator Tzmbl cells by β-galactosidase staining. B) Relative number of infected cells was counted for each sample and C) plotted. These results are representative of three independent experiments.