Carcinoma, Basal CellBreast DiseasesHyperplasiaMetaplasiaEpitheliumCarcinoma, Intraductal, NoninfiltratingEpithelial CellsBasal Cell Nevus SyndromePrecancerous ConditionsGoblet CellsBreastKeratinsEsophagusBiopsySkin NeoplasmsMicroscopy, ElectronImmunohistochemistryMucinsIntestinal MucosaMultiplex Polymerase Chain ReactionMucusNeoplasms, Basal CellCholinergic AgonistsBarrett EsophagusAdenocarcinomaChromosomes, Human, Pair 10Biopsy, NeedleBody FluidsCell DifferentiationChromosomes, Human, Pair 9Intestine, SmallMicroscopy, Electron, ScanningBreast NeoplasmsColonLarvaEyelid NeoplasmsCactaceaeTumor Markers, BiologicalChromosomes, Human, Pair 17Facial NeoplasmsMohs SurgeryCalcinosisKeratin-14SkinCarcinoma, Squamous CellMucous MembraneKeratosisEpidermisDermoscopyKeratinocytesHedgehog ProteinsEsophageal DiseasesKeratin-15TracheaOlfactory MucosaSunlightKeratoacanthomaJaw CystsProstateKeratosis, SeborrheicKeratin-5Alcian BlueEsophagoscopyBowen's DiseaseOptic Lobe, NonmammalianKeratin-8Esophageal NeoplasmsStem CellsBasement MembraneCardiaLutheran Blood-Group SystemStria VascularisKeratin-7Integrin alpha6Carcinoma, BasosquamousHistocytochemistryVisual CortexKi-67 AntigenHair FollicleRespiratory MucosaSkin PigmentationEsophagogastric JunctionCervix UteriEpithelium, CornealMembrane ProteinsAminolevulinic AcidIn Situ HybridizationCell DivisionLimbus CorneaeReceptors, Cell SurfacePhotochemotherapySomatosensory CortexImmunoenzyme TechniquesRegenerationCells, CulturedVibrissaeCiliaBronchiMedulloblastomaRNA, Messenger