Our study demonstrates that PECAM-1 is a reliable endothelial cell marker to evaluate the role of angiogenesis in the nude mouse model. It also indicates that revascularization of human endometrial implants occurs between 5 and 8 days after implantation and involves the disappearance of native graft vessels, coinciding with the invasion of the interface and then the stroma by murine vessels.
Eggermont, J., Donnez, J., Casanas-Roux, F., Scholtes, H., & Van Langendonckt, A. (2005). Time course of pelvic endometriotic lesion revascularization in a nude mouse model. Fertility and Sterility, 84(2), 492-499. https://doi.org/10.1016/j.ferntstert.2005.03.034 (Original work published 2005)