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MFI ratio of HLA-B*57/5801 expression and fraction of infected cells that had downregulated CD4 are shown for eight ES and eight CP (A). The open symbols represent HLA-B*5801-positive patients and the closed symbols represent HLA-B*57-positive patients. The horizontal bars represent the median value for each group. The relationship between peak viral load and the MFI ratio of HLA-B*57/5801 expression is shown (B). Color images available online at www.liebertonline.com/aid
