Fig. 3From: The interaction between vaginal microbiota, cervical length, and vaginal progesterone treatment for preterm birth riskLongitudinal profiling of community state types for progesterone (n = 25) and control groups (n = 42). Progesterone supplementation was commenced after the first sampling time point (<18 weeks). Each longitudinal sample was assigned to a CST (Fig. 1a) as indicated by the color-coded rectangle and categorized as a function of delivery gestationBack to article page