The inflammatory peritoneal environment contributes to the colonization of endometriosis lesions, and the peritoneal fluid contains high levels of cytokines and growth factors [44], such as interferon-gamma-induced protein-10 (CXCL10), IL-8, and chemokine growth-regulated-alpha (GRO-α) [45–47]. Here, CXCL10 is linked to endometriosis.