title: Intrinsic and extrinsic factors in preimplantation development.
mesh_terms: D000818:Animals; D001755:Blastocyst / Q000166:cytology / Q000254:growth & development; D002454:Cell Differentiation; D004622:Embryo, Mammalian / Q000166:cytology / Q000502:physiology*; D047108:Embryonic Development; D005260:Female; D005306:Fertilization; D006801:Humans; D051379:Mice; D011247:Pregnancy; D011261:Pregnancy Trimester, First; D011270:Pregnancy, Animal; D014158:Transcription, Genetic; D014599:Uterus / Q000502:physiology