Neuregulin-1NeuregulinsReceptor, erbB-3Receptor, erbB-2Receptor, Epidermal Growth FactorGenes, erbBEpidermal Growth FactorOncogene Proteins v-erbBGenes, erbB-2Signal TransductionBreast NeoplasmsCell Line, TumorQuinazolinesPhosphorylationMucin-4Proto-Oncogene Proteins c-aktGene Expression Regulation, NeoplasticDimerizationLigandsPhosphatidylinositol 3-KinasesProto-Oncogene ProteinsCell ProliferationMammary Neoplasms, ExperimentalAntineoplastic AgentsGRB7 Adaptor ProteinTyrphostinsTumor Cells, CulturedTransforming Growth Factor alphaAntibodies, Monoclonal, HumanizedGene AmplificationProtein Kinase InhibitorsDrug Resistance, NeoplasmMammary Glands, AnimalCell Transformation, NeoplasticHSP90 Heat-Shock ProteinsSchwann CellsProtein BindingMice, TransgenicIntercellular Signaling Peptides and ProteinsBenzothiazolesEnzyme ActivationNonheme Iron ProteinsReceptor Protein-Tyrosine KinasesAntibodies, Monoclonal