Carcinoma, Basal CellCell DifferentiationCarcinomaCarcinoma, Squamous CellCarcinoma, HepatocellularBasal Cell Nevus SyndromeSkin NeoplasmsImmunohistochemistryCarcinoma in SituCarcinoma, PapillaryNeoplasms, Basal CellCells, CulturedRNA, MessengerLiver NeoplasmsStem CellsSignal TransductionCell ProliferationCell DivisionTranscription FactorsKeratinsCarcinoma, Ductal, BreastTumor Cells, CulturedCell LineEyelid NeoplasmsReverse Transcriptase Polymerase Chain ReactionTumor Markers, BiologicalCell Line, TumorGene Expression Regulation, DevelopmentalKeratinocytesGene Expression Regulation, NeoplasticAdenocarcinomaCell LineageMolecular Sequence DataCarcinoma, Transitional CellEpidermisEpithelial CellsBase SequenceGene Expression RegulationSex DifferentiationDNA-Binding ProteinsFacial NeoplasmsCarcinoma, Adenoid CysticNeoplasm InvasivenessTretinoinEpitheliumKeratin-14Embryonic Stem CellsPhenotypeNeoplasm ProteinsCarcinoma, EmbryonalCarcinoma, BronchogenicMohs SurgeryGene ExpressionCarcinoma, Intraductal, NoninfiltratingTime FactorsCarcinoma, Small CellSkinPrognosisBreast NeoplasmsIn Situ HybridizationCarcinoma, MedullaryApoptosisBlotting, WesternTrans-ActivatorsMice, TransgenicGene Expression ProfilingCarcinoma, NeuroendocrineMutationCarcinoma, LobularNeoplasm StagingMice, Inbred C57BLImmunoenzyme TechniquesLung NeoplasmsThyroid NeoplasmsNasopharyngeal NeoplasmsHead and Neck NeoplasmsTransfectionPromoter Regions, GeneticMembrane ProteinsHomeodomain ProteinsUp-RegulationFlow CytometryMouth NeoplasmsTranscription, GeneticMice, KnockoutDown-RegulationCell Transformation, NeoplasticCarcinoma, AdenosquamousHedgehog ProteinsNuclear ProteinsMice, NudeEsophageal NeoplasmsCarcinoma, MucoepidermoidAntigens, DifferentiationAntineoplastic AgentsColonic NeoplasmsOsteoblastsCell CycleOsteogenesisDNA Primers