Mice, TransgenicGenes, erbBTransgenesMice, Inbred C57BLReceptor, erbB-3Disease Models, AnimalReceptor, erbB-2Neuregulin-1Promoter Regions, GeneticPlants, Genetically ModifiedAnimals, Genetically ModifiedGene ExpressionRats, TransgenicGene Expression RegulationRNA, MessengerOrgan SpecificityMolecular Sequence DataSignal TransductionPhenotypeBase SequenceGreen Fluorescent ProteinsImmunohistochemistryReceptor, Epidermal Growth FactorOncogene Proteins v-erbBMice, KnockoutAmyloid beta-Protein PrecursorMutationBrainCells, CulturedCrosses, GeneticGenes, ReporterRecombinant Fusion ProteinsMammary Neoplasms, ExperimentalIntegrasesAlzheimer DiseasePlaque, AmyloidCell DifferentiationGene Expression Regulation, DevelopmentalAmyloid beta-PeptidesMice, Inbred CBAGenes, erbB-2Blotting, WesternMammary Glands, AnimalLac OperonReverse Transcriptase Polymerase Chain ReactionLiverDNA PrimersApoptosisTranscription FactorsAntigens, Polyomavirus TransformingHyperplasiaNeuronsEnhancer Elements, GeneticPhosphorylationMice, Inbred Strainsbeta-GalactosidaseNerve Tissue ProteinsMyocardiumThymus GlandCell ProliferationTobaccoCell Line, TumorCell Transformation, NeoplasticIn Situ HybridizationLuminescent ProteinsCell DivisionKeratin-14DoxycyclineMammary Tumor Virus, MouseTranscription, GeneticMice, Inbred DBASpleenCell LineDNA-Binding ProteinsUp-RegulationTissue DistributionBlotting, NorthernBlotting, SouthernPresenilin-1TransfectionProto-Oncogene ProteinsMice, Inbred BALB CTime FactorsEmbryo, MammalianTransforming Growth Factor alphaPolymerase Chain ReactionT-LymphocytesAmino Acid SequenceChromosomes, Artificial, BacterialAgingAnimals, NewbornEpidermisGenetic VectorsMembrane ProteinsFlow CytometryBreast NeoplasmsGene Expression Regulation, EnzymologicRegulatory Sequences, Nucleic Acidtau ProteinsRecombinant Proteins