Effect of implantation delay on transfer of rat embryos to mice.
Rat and mouse blastocysts were transferred to the uteri of ovariectomized mice, maintained by progesterone for a few days and induced to implant by oestradiol administration. Mouse implantation sites contained normal embryos; all rat embryos were retarded, although some had developed to the egg-cylinder stage.
D000818:Animals; D002369:Castration; D010064:Embryo Implantation; D010065:Embryo Implantation, Delayed; D004624:Embryo Transfer; D047108:Embryonic Development; D005260:Female; D051379:Mice; D011247:Pregnancy; D051381:Rats; D014183:Transplantation, Heterologous