Figure 3
From: Vpx is Critical for SIVmne infection of pigtail macaques
Replication fitness of SIV Vpx mutant molecular clones in CEMx174 cells. Wild type and Vpx mutant SIVs (50 ng by p27 antigen ELISA) were used for infection, and reverse transcriptase activity in solubilized released virus present in 0.08 ml of culture supernatant was measured as cpm of [3H]-thymidine incorporation into DNA at each indicated time point.