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(A) Correlation between age of vaginal patency and circulating IGF1 (R2 = 0.19, P = 0.013). (B) Correlation between age of vaginal patency and mean lifespan. Dashed line, correlation among all strains (R2 = 0.04, P = 0.27); solid line, correlation without short-lived strains (mean lifespan <600 d); solid dots, short-lived strains (R2 = 0.33, P = 0.005).
