Sea UrchinsEmbryo, NonmammalianStrongylocentrotus purpuratusLytechinusEctodermEmbryo, MammalianGastrulaHemicentrotusParacentrotusOvumBlastomeresGene Expression Regulation, DevelopmentalChick EmbryoBlastocystBlastulaNodal ProteinMesodermEmbryonic DevelopmentEndodermFertilizationBody PatterningEchinodermataEmbryo ImplantationCleavage Stage, OvumMolecular Sequence DataZygoteMicroinjectionsIn Situ HybridizationHyalinMorphogenesisBase SequenceAmino Acid SequenceGastrulationEmbryonic InductionRNA, MessengerEmetineLarvaTranscription FactorsEmbryo LossCloning, MolecularStarfishEmbryonic and Fetal DevelopmentOocytesGene Regulatory NetworksOligoribonucleotides, AntisenseSequence Homology, Amino AcidMorpholinosHomeodomain ProteinsFertilization in VitroLithium ChlorideCytoskeletal ProteinsSpermatozoaLeft-Right Determination FactorsRutamycinGenes, RegulatorSignal TransductionCalcium CarbonateTranscription, GeneticSperm TailMitosisDNACell LineageDNA, ComplementaryPregnancyOligonucleotides, AntisenseCiliabeta CateninCell NucleusLithiumMouthCell DifferentiationModels, BiologicalMorulaReceptors, NotchTubulinEmbryo DispositionCDC2 Protein KinaseBone Morphogenetic ProteinsSequence AlignmentNickelProtein BiosynthesisRNA ProbesHistonesZebrafishCore Binding Factor alpha SubunitsTime FactorsPhylogenyExtracellular Matrix ProteinsGenesCryopreservationWnt ProteinsDNA PrimersDNA-Binding ProteinsRegulatory Sequences, Nucleic AcidNucleic Acid HybridizationCarbocyaninesProteinsChloramphenicol O-AcetyltransferaseSpecies SpecificityGene Expression