Lymphocytes, NullMice, KnockoutMutationPhenotypeMice, Inbred C57BLGene DeletionAllelesMice, Mutant StrainsGlutathione TransferaseMolecular Sequence DataHomozygoteGene TargetingGenotypeMice, TransgenicGene Expression Regulation, DevelopmentalBase SequenceTranscription FactorsAmino Acid SequenceGenes, LethalSignal TransductionGenetic Complementation TestEmbryo, MammalianHeterozygoteDNA-Binding ProteinsCells, CulturedRNA, MessengerCrosses, GeneticDisease Models, AnimalMutagenesisMembrane ProteinsTumor Suppressor Protein p53DNA PrimersCell DifferentiationFungal ProteinsGenes, FungalDrosophila ProteinsGene Expression RegulationSaccharomyces cerevisiaeInterleukin Receptor Common gamma SubunitApoptosisHomeodomain ProteinsEmbryo LossImmunohistochemistryIn Situ HybridizationModels, GeneticPolymorphism, GeneticFibroblastsBlotting, WesternSequence Homology, Amino AcidReverse Transcriptase Polymerase Chain ReactionGene ExpressionTime FactorsCloning, MolecularGlutathione S-Transferase piCell LineGene Knockout TechniquesMorphogenesisSaccharomyces cerevisiae ProteinsNuclear ProteinsNerve Tissue ProteinsDrosophila melanogasterMice, 129 StrainCell ProliferationCarrier ProteinsPolymerase Chain ReactionTrans-ActivatorsEmbryonic and Fetal DevelopmentModels, BiologicalCell DivisionRepressor ProteinsAnimals, NewbornDrosophilaMutagenesis, InsertionalAnimals, Genetically ModifiedTranscription, GeneticComplement C4aNeuronsBacterial ProteinsSuppression, GeneticTransgenesProtein BindingStem CellsSequence DeletionSequence AlignmentPromoter Regions, GeneticDictyosteliumBasic Helix-Loop-Helix Transcription FactorsCell MovementCaenorhabditis elegansProteinsLiverEmbryonic DevelopmentGenes, p53Chromosome MappingCaenorhabditis elegans ProteinsMuscle, SkeletalGene Expression ProfilingRecombinant Fusion ProteinsGenes, SuppressorProtein Structure, Tertiary