Bone Morphogenetic ProteinsBone Morphogenetic Protein 2Bone Morphogenetic Protein 4Bone Morphogenetic Protein 7Bone Morphogenetic Protein Receptors, Type IBone Morphogenetic Protein ReceptorsBone Morphogenetic Protein 6Bone Morphogenetic Protein Receptors, Type IICell DifferentiationBone and BonesBone Morphogenetic Protein 5Smad1 ProteinSmad ProteinsBone Morphogenetic Protein 3Smad5 ProteinBone Morphogenetic Protein 15Transforming Growth Factor betaBone Morphogenetic Protein 1Signal TransductionSmad6 ProteinBone RemodelingOsteogenesisSmad8 ProteinOsteoblastsGene Expression Regulation, DevelopmentalGrowth Differentiation Factor 2Cells, CulturedBone RegenerationGrowth Differentiation FactorsGrowth Differentiation Factor 5Bone DensityReceptors, Growth FactorBone DevelopmentGrowth Differentiation Factor 9Stem CellsBone Marrow CellsBone MatrixBone ResorptionActivinsIntercellular Signaling Peptides and ProteinsRNA, MessengerMesodermActivin Receptors, Type IGrowth Differentiation Factor 6Cell LineTranscription FactorsIn Situ HybridizationInhibitor of Differentiation Protein 1Trans-ActivatorsBone MarrowCell ProliferationAlkaline PhosphataseCell LineageCarrier ProteinsReverse Transcriptase Polymerase Chain ReactionBody PatterningSmad4 ProteinBone NeoplasmsGene Expression RegulationActivin Receptors, Type IICore Binding Factor Alpha 1 SubunitBone DiseasesFollistatinHomeodomain ProteinsChondrogenesisProteinsDNA-Binding ProteinsActivin ReceptorsEmbryonic Stem CellsMice, Inbred C57BLSmad Proteins, Receptor-RegulatedMolecular Sequence DataMesenchymal Stromal CellsXenopus ProteinsCalcification, PhysiologicMice, KnockoutImmunohistochemistryChick EmbryoMSX1 Transcription FactorHedgehog ProteinsPhenotypeTolloid-Like MetalloproteinasesWnt ProteinsMice, TransgenicChondrocytesMorphogenesisBone TransplantationOssification, HeterotopicEmbryo, MammalianGene ExpressionOsteocalcinCell DivisionBase SequenceCartilageSmad7 ProteinEmbryo, NonmammalianEctodermRecombinant ProteinsBone SubstitutesMutation