title: In vitro fertilization and early embryogenesis: a cytological analysis.
mesh_terms: D000818:Animals; D001755:Blastocyst / Q000648:ultrastructure; D002455:Cell Division; D002467:Cell Nucleus / Q000648:ultrastructure; D002843:Chromatin; D002875:Chromosomes; D004622:Embryo, Mammalian / Q000502:physiology / Q000648:ultrastructure*; D005260:Female; D005306:Fertilization; D066298:In Vitro Techniques; D007365:Intercellular Junctions / Q000648:ultrastructure; D008297:Male; D051379:Mice; D008854:Microscopy, Electron; D008928:Mitochondria / Q000648:ultrastructure; D010063:Ovum / Q000648:ultrastructure*; D013094:Spermatozoa / Q000648:ultrastructure
chemical_list: D002843:Chromatin