Smad3 ProteinSmad4 ProteinSmad7 ProteinSmad1 ProteinSmad5 ProteinSmad ProteinsSmad8 ProteinEmbryonic DevelopmentGene Expression Regulation, DevelopmentalEmbryo, NonmammalianPlant Somatic Embryogenesis TechniquesTransforming Growth Factor betaEmbryonic and Fetal DevelopmentIn Situ HybridizationTrans-ActivatorsSignal TransductionMolecular Sequence DataDNA-Binding ProteinsEmbryo, MammalianZebrafishMorphogenesisMesodermBone Morphogenetic ProteinsBody PatterningTranscription FactorsAmino Acid SequenceXenopus ProteinsBase SequenceGastrulaHomeodomain ProteinsDrosophila ProteinsRNA, MessengerSeedsZebrafish ProteinsCell DifferentiationDrosophilaNervous SystemTransforming Growth Factor beta1Receptors, Transforming Growth Factor betaMutationDrosophila melanogasterTranscription, GeneticGenes, HomeoboxOogenesisSequence Homology, Amino AcidActivinsPhenotypeEctodermEndodermCloning, MolecularDNA, ComplementaryXenopus laevisGenes, LethalBlastodermGenes, InsectZygoteXenopusCaenorhabditis elegansAnimals, Genetically ModifiedChick EmbryoBlastocystReverse Transcriptase Polymerase Chain ReactionGene ExpressionGene Expression RegulationMice, KnockoutBone Morphogenetic Protein 4Promoter Regions, GeneticInsect ProteinsCell LineNodal ProteinCells, CulturedEmbryonic InductionNuclear ProteinsImmunohistochemistryLarvaCaenorhabditis elegans ProteinsCentral Nervous SystemProtein BindingDNA PrimersGerm CellsBone Morphogenetic Protein 2Genes, ReporterCell LineageCell NucleusMice, TransgenicOrganogenesisBlastulaUrochordataPhosphorylationOocytesGene Expression Regulation, PlantTime FactorsSequence AlignmentModels, BiologicalSea UrchinsTissue DistributionMice, Inbred C57BLWnt ProteinsGene TargetingRepressor Proteins