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Average log10 HIV RNA copies per milliliter for subtypes A, B, C, D, E, and G from clinical specimens. For subtypes D, E, and G the results for individual samples are shown. For subtypes A, B, and C, the brackets represent the 95% confidence interval of the average. Only data for samples that were positive and below the upper limit of all four versions (750,000 HIV RNA copies/ml) were included in the figure. V, version.
