In each graph, the percentages of inhibition relative to the extent of virus replication in the no-MVC control at various MVC concentrations are shown. The MVC susceptibilities of the following clones are shown: (A) Mac46–19, the most prevalent Mac46 day 14 env clone, (B) Mac463–20, a minority day 14 Mac46 env clone, (C) Mac73–34, the most prevalent day 21 Mac73 env clone, (D) Mac803–28, the most prevalent day 14 Mac80 env clone, (E) Mac803–30, a minority day 14 Mac80 env clone, (F) SHIV stock and CR02, the most prevalent env clones from the pre-infection SHIV-162P3 stock and day 14 control macaque CR02, respectively. Error bars represent the standard errors of the means of results from at least two experiments, each performed in triplicate. Nonlinear regression with a variable slope was used to estimate a fitted curve. MVC, maraviroc.