Breast NeoplasmsBreastCell Line, TumorGene Expression Regulation, NeoplasticReceptors, EstrogenRNA, MessengerCarcinoma, Ductal, BreastTumor Markers, BiologicalBreast DiseasesMammary Neoplasms, ExperimentalTumor BurdenNeoplasm MetastasisImmunohistochemistryNeoplasm ProteinsReceptors, ProgesteroneMice, NudeReceptor, erbB-2Tumor Necrosis Factor-alphaCell ProliferationPrognosisTransplantation, HeterologousGenes, Tumor SuppressorNeoplasms, ExperimentalTumor Suppressor Protein p53DNA, NeoplasmNeoplasm StagingXenograft Model Antitumor AssaysReverse Transcriptase Polymerase Chain ReactionTamoxifenNeoplasm TransplantationNeovascularization, PathologicBreast FeedingAdenocarcinomaLymphatic MetastasisTumor Suppressor ProteinsGene Expression ProfilingTumor Cells, CulturedNeoplasm InvasivenessNeoplasmsAntineoplastic AgentsTumor MicroenvironmentBrain NeoplasmsBreast Neoplasms, MaleAntigens, NeoplasmWilms TumorMice, Inbred BALB CRNA, NeoplasmSignal TransductionCarcinoma, LobularCarcinoma, Intraductal, NoninfiltratingCell DivisionMammary Neoplasms, AnimalDisease ProgressionMammographyBlotting, WesternEstrogen Receptor alphaFibrocystic Breast DiseaseCarcinoid TumorFibroadenomaImmunoenzyme TechniquesOvarian NeoplasmsTime FactorsNeoplasm Recurrence, LocalAntibodies, MonoclonalCarcinomaCell Transformation, NeoplasticMice, SCIDColonic NeoplasmsAntineoplastic Agents, HormonalLung NeoplasmsLiver NeoplasmsMutationApoptosisUltrasonography, MammaryOligonucleotide Array Sequence AnalysisSurvival AnalysisTreatment OutcomePolymerase Chain ReactionCell MovementNeuroendocrine TumorsNeoplasms, Hormone-DependentMammary Glands, HumanMCF-7 CellsDNA MethylationAdenofibromaGenes, BRCA1TransfectionKi-67 AntigenRNA, Small InterferingCell Growth ProcessesDown-RegulationDisease-Free SurvivalEstrogensMolecular Sequence DataGenes, erbB-2MastectomyBase SequenceMastectomy, SegmentalGene ExpressionTissue Distribution