Viral RNA copy numbers in plasma of SIVagm.sab92018-infected Caribbean AGMs. The detection limit of the assay was 103 copies/ml. The range of plasma VLs in Caribbean AGMs is in the same range as values observed in African AGMs infected with the same viral strain (42). Symbols for animals: no. EI45 (•), no. EI53 (○), no. EI52 (▾), no. EI42 (▿), no. EI51 (▪), and no. EI44 (□).