Clone CellsEmbryonic DevelopmentCell DifferentiationGene Expression Regulation, DevelopmentalEmbryo, NonmammalianEmbryo, MammalianMolecular Sequence DataBase SequenceCells, CulturedEmbryonic and Fetal DevelopmentCell LineRNA, MessengerTranscription FactorsAmino Acid SequenceBlastocystEmbryonic Stem CellsStem CellsSignal TransductionIn Situ HybridizationCell DivisionCell LineageChick EmbryoPhenotypeCloning, MolecularZebrafishHomeodomain ProteinsGene Expression RegulationDNA-Binding ProteinsMorphogenesisMice, Inbred C57BLMesodermMutationGene ExpressionReverse Transcriptase Polymerase Chain ReactionMice, KnockoutTranscription, GeneticCell ProliferationMice, TransgenicImmunohistochemistryDNA, ComplementaryXenopus ProteinsEmbryo LossTretinoinPregnancyGastrulaOocytesZebrafish ProteinsTime FactorsTransfectionEndodermDNASex DifferentiationDNA PrimersBody PatterningCell CycleZygoteSequence Homology, Amino AcidT-LymphocytesGene Expression ProfilingNuclear ProteinsTumor Cells, CulturedPromoter Regions, GeneticModels, BiologicalCell MovementTrans-ActivatorsPolymerase Chain ReactionXenopus laevisBlastomeresApoptosisGene TargetingRepressor ProteinsCell Culture TechniquesDrosophila ProteinsOvumCell AggregationXenopusEctodermMembrane ProteinsCarcinoma, EmbryonalTeratomaNeuronsLymphocyte ActivationCell NucleusNervous SystemBlotting, NorthernFluorescent Antibody TechniqueBone Morphogenetic ProteinsCaenorhabditis elegansDrosophilaBlastulaFlow CytometryChimeraWnt ProteinsBlotting, WesternOctamer Transcription Factor-3FibroblastsCell SurvivalNeural CrestPluripotent Stem CellsQuail