FIG 1.

Plasma viral loads in pig-tailed and rhesus macaques infected with ΔGY or SIVmac239. Plasma viral loads are shown for pigtailed macaques (A and B) (diamonds) and previously reported rhesus macaques (C and D) (triangles), (24). †, time points at which individual animals were euthanized with AIDS. (A and C) Plasma RNA levels postinfection. One ΔGY-infected pig-tailed macaque (JV15) died of causes unrelated to SIV infection at week 16 with a plasma viral RNA level of 200 copies/ml and is not included in the viral set point analysis (see Fig. S1A in the supplemental material). (B and D) Peak viremia and viral set points for individual animals (mean ± SEM). ΔGY-infected macaques were divided into controllers (black) or progressors (blue); SIVmac239-infected animals are shown (red). The threshold of sensitivity for the viral RNA assay varied from 15 to 50 RNA copies/ml and is represented by the shaded area. RNA values for individual animals are shown in Fig. S1 in the supplemental material. P[r] values were determined using the Mann-Whitney nonparametric test. NS, not significant.