Activin Receptors, Type IIActivin ReceptorsActivinsActivin Receptors, Type IMyostatinReceptors, Transforming Growth Factor betaReceptors, Interleukin-1 Type IIBone Morphogenetic Protein Receptors, Type IIInhibinsInhibin-beta SubunitsFollistatinTransforming Growth Factor betaReceptors, Growth FactorProtein-Serine-Threonine KinasesSignal TransductionSmad2 ProteinBone Morphogenetic ProteinsSmad ProteinsRNA, MessengerBone Morphogenetic Protein Receptors, Type IReceptors, Interleukin-1Molecular Sequence DataCells, CulturedReceptors, Tumor Necrosis Factor, Type IIGrowth Differentiation FactorsSmad7 ProteinAmino Acid SequenceTransforming Growth Factor beta1Receptors, AngiotensinCell LineReverse Transcriptase Polymerase Chain ReactionSmad3 ProteinBone Morphogenetic Protein ReceptorsMutation