Decay of plasma HIV-1 RNA levels following initiation of ART in three representative study participants with high baseline plasma HIV-RNA measurements (68500, 265092, and 643000 copies per mL for 441, 449, and 451, respectively). Decay parameters for all study participants are given in SI Appendix, Tables S2 and S3. Data were fitted to a biexponential decay model (black lines), as described in Methods. Open symbol, plasma HIV-1 RNA value below the limit of detection.