Changes in the submicroscopic structure of the rat blastocyst in the preimplantation period.
D000818:Animals; D002454:Cell Differentiation; D010064:Embryo Implantation; D005260:Female; D005855:Germ Layers / Q000166:cytology; D010063:Ovum; D011247:Pregnancy; D051381:Rats / Q000196:embryology*