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FertilizationFertilization in VitroSpermatozoaSperm-Ovum InteractionsOvumOocytesEmbryo TransferZygoteZona PellucidaSperm Injections, IntracytoplasmicSperm MotilityPregnancySea UrchinsPregnancy RateAcrosomeCleavage Stage, OvumAcrosome ReactionFertilizersSperm CapacitationInfertility, FemaleEmbryonic DevelopmentCryopreservationBlastocystOvulation InductionInfertility, MaleInfertilityEgg ProteinsMicroinjectionsEmbryo ImplantationFertilityVitelline MembraneEmbryonic and Fetal DevelopmentParthenogenesisSperm HeadPregnancy OutcomeSemen PreservationOocyte RetrievalOogenesisInsemination, ArtificialFollicular FluidReproductive TechniquesUrochordataStarfishEmbryo, MammalianFallopian TubesMeiosisOvuleOvarian FollicleMenotropinsOvulationChorionic GonadotropinSemenOocyte DonationCumulus CellsAcrosinReproductive Techniques, AssistedEmbryo Culture TechniquesSperm CountSperm TransportInseminationEchinodermataSuperovulationIn Vitro Oocyte Maturation TechniquesOvaryLive BirthReproductionFollicle Stimulating HormoneEpididymisOligospermiaPollen TubeMicromanipulationPregnancy, MultipleFallopian Tube DiseasesEmbryo, NonmammalianSperm TailContraception, ImmunologicOvarian Hyperstimulation SyndromeBlastomeresEjaculationMetaphaseGerm Cells, PlantSpermatidsTestisFertility Agents, FemaleCryoprotective AgentsCytoplasmCattleSeminal Plasma ProteinsPollenTime FactorsCalciumSperm MaturationBufo arenarumSeedsAbortion, SpontaneousSemen AnalysisSurrogate MothersMorulaGonadotropinsSperm Retrieval