passages.id: split_4_test_2895_passage
passages.type: progene_text
passages.text: On D6 - D8 of embryo implantation , EGF 3 protein accumulates at the uterine mesometrial pole , a region that contributes to the trophoblastic invasiveness and placentation.This temporal and spatial localization of EGF protein in the mouse uterus implicates the cytokine in the regulation of trophoblastic invasiveness and uterine receptiveness .