AgrinLamininReceptors, LamininMuscle Fibers, SkeletalReceptors, CholinergicDystroglycansBasement MembraneReceptor AggregationMusclesMuscle, SkeletalMyoblastsNeuromuscular JunctionCells, CulturedMuscle DevelopmentMuscle ProteinsMyoblasts, SkeletalCell LineCell AdhesionChick EmbryoCell DifferentiationFibronectinsExtracellular MatrixIntegrinsIntegrin alpha6beta1Synaptic MembranesMolecular Sequence DataMuscle CellsFluorescent Antibody TechniqueMyogeninRNA, MessengerCollagenDystrophinAmino Acid SequenceProtein BindingUtrophinIntegrin alpha6MyoD ProteinExtracellular Matrix ProteinsCell FusionMuscular Dystrophy, AnimalCytoskeletal ProteinsTorpedoBungarotoxinsReceptor Protein-Tyrosine KinasesImmunohistochemistryIntegrin alpha3beta1Signal TransductionHeparitin SulfateLutheran Blood-Group SystemProtein IsoformsMicroscopy, ElectronAntigens, CD29TransfectionGene Expression RegulationMembrane GlycoproteinsDystrophin-Associated Proteins