Balaban, B The effect of pronuclear morphology on embryo quality parameters and blastocyst transfer outcome. [electronic resource] - Human reproduction (Oxford, England) Nov 2001 - 2357-61 p. digital Publication Type: Journal Article ISSN: 0268-1161 Standard No.: 10.1093/humrep/16.11.2357 doi Subjects--Topical Terms: Blastocyst--physiologyCell Nucleus--ultrastructureCleavage Stage, Ovum--ultrastructureCryopreservationEmbryo ImplantationEmbryo TransferEmbryo, Mammalian--physiologyFemaleHumansMalePregnancyRetrospective StudiesSperm Injections, IntracytoplasmicZygote--ultrastructure