Hair FollicleHairMorphogenesisHair RemovalSebaceous GlandsEpidermisDermisAlopeciaKeratinocytesSkinKeratin-14Ovarian FollicleHedgehog ProteinsMice, TransgenicGene Expression Regulation, DevelopmentalCell DifferentiationTrans-Activatorsbeta CateninMice, KnockoutSignal TransductionMice, Inbred C57BLFollicle Stimulating HormoneHair DiseasesKeratinsScalpHair Cells, AuditoryHair ColorImmunohistochemistryKeratin-15EctodysplasinsKeratins, Hair-SpecificOvaryGranulosa CellsHair Cells, Auditory, InnerStem CellsIn Situ HybridizationAlopecia AreataOvulationSkin AbnormalitiesHypotrichosisFollicular FluidMelanocytesOrgan Culture TechniquesHair DyesEpitheliumHair Cells, VestibularMesodermHair PreparationsTheca CellsHair Cells, Auditory, OuterEpithelial Cells