CD34 and HIV-1 infection: Interestingly, this was not observed for CD34+ progenitors cells from BM, where the frequencies were altered by HIV-1 infection compared to uninfected controls of 1.8% ± 0.3 versus 0.8% ± 0.1 and in 2ART and 4ART regimens (2.9% ± 0.7 versus 6.1% ± 1.6, Fig. 4).