PCNA and endometriosis: The in vivo experiments verified that FC (10, 50, and150 mg/kg) significantly reduced the VEGF level and the protein expression of PCNA on endometriotic lesions, showing that FC can reduce the inflammatory effect, not only triggering the apoptosis ability but also specifically reducing the endometriosis lesion’s angiogenesis effect to effectively decrease the proliferation of endometriosis.