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. 2020 Nov;223(5):624–664. doi: 10.1016/j.ajog.2020.06.004

Figure 8.

Figure 8

The vaginal microbiome during the life cycle

Bacterial populations inhabiting the vagina change in response to estrogen levels, modulating glycogen availability in the vaginal epithelium and subsequently the growth of bacteria based on the physicochemical features of the niche at each phase of the lifecycle.

Reprinted from Muhleisen et al.254

Mod, moderate.

Critchley. Menstruation: science and society. Am J Obstet Gynecol 2020.