OsteoclastsCathepsinsCathepsin BCathepsin LCathepsin KCathepsin DRANK LigandCathepsin GCathepsin HBone ResorptionCathepsin EReceptor Activator of Nuclear Factor-kappa BOsteoprotegerinCathepsin CCathepsin FAcid PhosphataseCathepsin ZOsteopetrosisBone and BonesOsteoblastsCysteine EndopeptidasesMacrophage Colony-Stimulating FactorCell DifferentiationCathepsin WBone RemodelingOsteolysisLysosomesCells, CulturedMembrane GlycoproteinsOsteogenesisCarrier ProteinsCathepsin ABone Marrow CellsNFATC Transcription FactorsPepstatinsCystatinsReceptors, Tumor Necrosis FactorEndopeptidasesCysteine Proteinase InhibitorsOsteoporosisReceptors, Cytoplasmic and NuclearMice, Inbred C57BLGlycoproteinsBone NeoplasmsMice, KnockoutMacrophagesIsoenzymesSignal TransductionProtease InhibitorsOsteocytesRNA, MessengerDiazomethaneBone DensitySkullDipeptidesSerine EndopeptidasesDiphosphonatesCoculture TechniquesCell LineBone DevelopmentVacuolar Proton-Translocating ATPasesBone Density Conservation AgentsReverse Transcriptase Polymerase Chain ReactionMolecular Sequence DataAmino Acid SequenceTNF Receptor-Associated Factor 6Receptor, Macrophage Colony-Stimulating FactorBone Diseases, MetabolicAlendronatePapainCystatin BEnzyme PrecursorsBone DiseasesCalcitoninCysteine ProteasesOsteitis DeformansBone MatrixCystatin AMonocytesHydrogen-Ion ConcentrationParathyroid HormoneImmunohistochemistryGene Expression RegulationPancreatic ElastaseBlotting, WesternX-Ray MicrotomographyStem CellsNF-kappa BCalcitriolFemurLeukocyte ElastaseMonocyte-Macrophage Precursor CellsTumor Necrosis Factor-alphaRecombinant ProteinsSynovial MembraneGene ExpressionArthritis, ExperimentalOsteopontinMice, TransgenicApoptosis