Embryo Culture TechniquesEmbryo, MammalianCulture TechniquesTeratogensEctogenesisBlastocystEmbryonic DevelopmentEmbryo, NonmammalianEmbryonic and Fetal DevelopmentFertilization in VitroChick EmbryoIncubatorsCulture MediaAbnormalities, Drug-InducedEmbryo ImplantationPregnancyOrgan Culture TechniquesNeurulationCell Culture TechniquesGene Expression Regulation, DevelopmentalZygoteBacteriological TechniquesCleavage Stage, OvumEmbryo TransferYolk SacGastrulaBlastomeresXenopus ProteinsFetal ViabilityOocytesCryopreservationSingle Embryo TransferSperm Injections, IntracytoplasmicPregnancy RateEctodermTime FactorsReproductive Techniques, AssistedIn Situ HybridizationMesodermTissue Culture TechniquesBody PatterningLive BirthEmbryo LossErgotamineZebrafishCyproheptadineCattleEndodermBacteriaXenopus laevisBloodEmbryonic InductionCells, CulturedMolecular Sequence DataMorphogenesisPalateEvaluation Studies as TopicCell DifferentiationXenopusPregnancy OutcomePolymerase Chain ReactionNeural CrestFallopian TubesNervous SystemZebrafish ProteinsBase SequenceMicrobiological TechniquesHomeodomain ProteinsBacteria, AerobicBatch Cell Culture TechniquesCongenital AbnormalitiesEmbryo DispositionMice, Inbred CBAMorulaColony Count, MicrobialTranscription FactorsMice, Inbred StrainsGestational AgeSensitivity and SpecificityPharynxBone Morphogenetic ProteinsOrganogenesisFecesRNA, MessengerCentrifugationAgarPlacentaAmino Acid SequenceSpecimen HandlingCell CountMice, Inbred C57BLBacteroidesEmbryo ResearchCloning, OrganismFungiSignal TransductionFibroblast Growth FactorsWnt ProteinsFluorescent Antibody TechniqueStem Cells