Shedding of HIV-1 DNA and total cells in endocervical secretions during the menstrual cycle. The log10 HIV-1 DNA level, log10 cell number, or log10 RNA level is presented. Data are summarized as daily means (solid lines) and means ± 1 SD (dotted lines for HIV-1 DNA and cell number; dashed lines for HIV-1 RNA) for the 16 participants who exhibited an LH surge.8 Only days on which there were at least 14 observations8 are shown. A, Log10 HIV-1 DNA copies/swab. B, Log10 total cell number/swab. C, Log10 HIV-1 DNA copies/106 cells. D, Log10 HIV-1 DNA copies/swab (black lines) and log10 HIV-1 RNA level/swab (gray lines).