Fig. 1.
Virus replication in RAJI-CD4 and RM3-CD4 cells. RAJI-CD4 (○) and RM3-CD4 (•) cells were infected with HIV-1IIIB (multiplicity of infection, 0.1) and virus production was monitored by measuring reverse transcriptase activity in cell-free culture supernatants. Results shown are the mean ± SD of triplicate samples. Reverse transcriptase activity in mock-infected cells was always less than 1,000 cpm/50 μL.