OsteoclastsBone ResorptionRANK LigandReceptor Activator of Nuclear Factor-kappa BOsteopetrosisAcid PhosphataseOsteoprotegerinCathepsin KBone and BonesOsteoblastsMacrophage Colony-Stimulating FactorCell DifferentiationBone RemodelingOsteolysisCells, CulturedOsteogenesisBone Marrow CellsNFATC Transcription FactorsMembrane GlycoproteinsVacuolar Proton-Translocating ATPasesOsteocytesCalcitoninMice, Inbred C57BLDiphosphonatesSkullCarrier ProteinsBone DevelopmentBone MatrixHippocampusIsoenzymesOsteoporosisMice, KnockoutReceptors, Tumor Necrosis FactorCathepsinsReceptor, Macrophage Colony-Stimulating FactorBone NeoplasmsSignal TransductionOrgan Culture TechniquesBone Density Conservation AgentsBone DensityRats, Sprague-DawleyCoculture TechniquesAlendronateBone DiseasesMacrophagesOsteitis DeformansStem CellsTartratesBone Diseases, MetabolicReceptors, Cytoplasmic and NuclearMicrotomyCalciumExcitatory Postsynaptic PotentialsX-Ray MicrotomographyRats, WistarAnimals, NewbornParathyroid HormoneTNF Receptor-Associated Factor 6GlycoproteinsFemurCalcitriolOsteopontinNeuronsMice, TransgenicCalcification, PhysiologicSynaptic TransmissionMonocyte-Macrophage Precursor CellsPatch-Clamp TechniquesIntegrin beta3TibiaReverse Transcriptase Polymerase Chain ReactionProto-Oncogene Proteins c-fosCell LineReceptors, VitronectinElectric StimulationCell FusionProto-Oncogene Proteins pp60(c-src)MonocytesTime FactorsRNA, MessengerDose-Response Relationship, DrugMicrophthalmia-Associated Transcription FactorOsteosclerosisGiant CellsDentinCell SurvivalSynapsesMice, Inbred ICRPyramidal CellsCell CountNF-kappa BGene Expression RegulationElectrophysiologyOvariectomyRabbitsAction PotentialsImmunohistochemistryGiant Cell Tumorsgamma-Aminobutyric AcidLong-Term Potentiation