FIG. 4.

Analysis of HIV-1 pseudotype virus replication in mouse cells. Human and murine cells were infected with equivalent doses of pNL43lucΔenv that was pseudotyped with either MuLV (A) or VSV-G (B) at 37°C for 6 h. After removal of the virus, cells were washed in growth medium. Luciferase activity was measured at 4 days postinfection, and normalized activities relative to the total protein quantity are shown. The data represent the means ± SEM of results from three wells. The data were reproduced in three independent experiments.