Shedding of the zona pellucida of the mouse blastocyst in normal pregnancy.
D000818:Animals; D010064:Embryo Implantation; D004622:Embryo, Mammalian / Q000502:physiology; D005260:Female; D051379:Mice; D008855:Microscopy, Electron, Scanning; D010063:Ovum / Q000502:physiology*; D011247:Pregnancy; D011270:Pregnancy, Animal; D013997:Time Factors; D014327:Trophoblasts / Q000502:physiology