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. Author manuscript; available in PMC: 2013 Jul 24.
Published in final edited form as: Sci Transl Med. 2012 Sep 12;4(151):151ra125. doi: 10.1126/scitranslmed.3004006

Fig. 3.

Fig. 3

Estimated HIV incidence from exponential regression model of TFV-DP concentrations (fmol/M vPBMC) in iPrEx. The placebo HIV infection rate is shown as a horizontal line at 3.9 infections per 100 person years, with the relative rate in the active arm according to TFV-DP concentrations (x-axis). Dashed lines represent the 95% confidence intervals. The IQR of TFV-DP concentrations associated with directly observed dosing in STRAND are provided as colored panels overlying the curves.