(A) Pharmacokinetics of tacrolimus in blood over 5 weeks in three STLV-1-infected mandrills. The grey zone indicates the effective therapeutic dose in humans. Immunological and virological data were analysed at different phases of the experiment: pretreatment corresponds to weeks –2, –1, and 0 (pre); treatment corresponds to weeks 1, 2, and 3 (treat); post-treatment corresponds to weeks 4, 5, 6, 7, and 8 (post). (B) Kinetics of STLV proviral load during immunusuppressive therapy. Each value represents the mean±SD of measurements in triplicate for the three phases of the experiment. (C) Kinetics of STLV proviral load in the three control animals.