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Impact of HIV-1 genotype on plasma HIV-1 RNA levels measured with the TaqMan real-time PCR test and two commercial RNA kits. (A) Difference between the mean viral loads measured with the real-time PCR test and the Versant assay version 3.0 (85 comparisons). (B) Difference between the mean viral loads measured with real-time PCR test and Monitor assay, version 1.5 (92 comparisons). The mean differences are represented by solid lines; the 95% CIs are shown by dashed lines.
