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Multiple studies have confirmed the presence of OS biomarkers in patient serum, peritoneal fluid, follicular fluid, ovarian cortex, and both normal and ectopic endometrial tissue (96, 97)

doi: 10.1152/physrev.00015.2007

doi: 10.1007/s00018-020-03679-5 252 ReedAIchuT-AMilosevichNMelilloBSchafrothMAOtsukaYet al