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Percentage of CD4+ cells in PBMC from RT-SHIV-infected macaques treated with either saline (A) or PMPA (B and C). The time point at which monkeys 1PMPA, 4PMPA, 8PMPA, and 25PMPA were challenged is marked by a vertical arrow. Euthanasia of monkeys during the observation period is indicated by a cross. Treatment periods (shaded) and identification of monkeys are as described in the legend to Fig. 1.
