MyostatinFollistatinActivin Receptors, Type IIMuscle, SkeletalTransforming Growth Factor betaFollistatin-Related ProteinsMuscular AtrophyHypertrophyProtein BindingMuscle Fibers, SkeletalMolecular Sequence DataMuscle DevelopmentMyoblastsMyoD ProteinBinding SitesSatellite Cells, Skeletal MuscleAmino Acid SequenceBase Sequence