The ultrastructure of the extraembryonic region of the preimplanted rabbit blastocyst before trophoblastic knob formation.
D000818:Animals; D004475:Ectoderm / Q000166:cytology; D010064:Embryo Implantation; D004707:Endoderm / Q000166:cytology; D005260:Female; D008854:Microscopy, Electron; D010063:Ovum / Q000166:cytology* / Q000254:growth & development; D011247:Pregnancy; D011817:Rabbits; D014327:Trophoblasts / Q000166:cytology