FIG. 1.

PFI susceptibility of patient isolates and Env pseudotypes. The mean IC₅₀ for the virus isolates includes the original patient isolate, a regrown stock, and infected PBMC culture supernatants from days 5 and 14 postinfection. The mean IC₅₀ for the Env pseudotypes includes between 6 and 10 individual Envs produced by PCR amplification of genomic DNA from day 5 of a PBMC infection. Error bars indicate the standard error of the mean for each bar. All experiments were performed in triplicate in at least two independent experiments.