Sperm CountEmbryo, MammalianSperm HeadEmbryo, NonmammalianSperm CapacitationChick EmbryoEmbryo ImplantationSperm MaturationSperm Injections, IntracytoplasmicBlastocystEmbryonic DevelopmentSperm TransportFertilizationSperm-Ovum InteractionsAcrosomeInfertility, MaleSperm MidpieceCryopreservationEmbryonic and Fetal DevelopmentSemenSperm BanksEmbryo LossPregnancySemen PreservationGene Expression Regulation, DevelopmentalZona PellucidaEpididymisFertilization in VitroOocytesCleavage Stage, OvumZygoteSemen AnalysisBlastomeresTestisFertilityOvumSea UrchinsEjaculationMorulaEmbryo DispositionPregnancy RateOligospermiaZebrafishSperm WhaleGastrulaBody PatterningInsemination, ArtificialIn Situ HybridizationMicroinjectionsFallopian TubesMolecular Sequence DataCloning, OrganismCulture TechniquesMorphogenesisSingle Embryo TransferEmbryo ResearchCryoprotective AgentsMesodermEctogenesisParthenogenesisSeminal Plasma ProteinsNuclear Transfer TechniquesEgg ProteinsAsthenozoospermiaProtaminesCattleEctodermZebrafish ProteinsTime FactorsReproductive TechniquesAmino Acid SequenceBase SequencePregnancy OutcomeXenopus ProteinsVitelline MembraneRNA, MessengerSeedsDrosophilaAneuploidyDrosophila ProteinsMice, Inbred ICRHomeodomain ProteinsUrochordataFetal ViabilityTranscription FactorsPreimplantation DiagnosisAzoospermiaAnimals, Genetically ModifiedEndodermCell NucleusBlastodermSexual Behavior, AnimalMutationEmbryonic InductionInfertilityXenopus laevisDrosophila melanogasterPhenotypeMice, Inbred StrainsGerm Cells