passages.id: split_4_test_2887_passage
passages.type: progene_text
passages.text: Injection of EGF antibody into a uterine horn on the third day of pregnancy ( D3 ) significantly reduced the number of mouse embryos that implanted on D8 , indicating EGF have a function in the mouse embryo implantation.Further investigation by using indirect immunofluorescence and confocal microscope was made to trace EGF and EGFR protein localization during the mouse embryo implantation .