DystrophinMuscular DystrophiesMuscular Dystrophy, DuchenneUtrophinMice, Inbred mdxMuscular Dystrophy, AnimalDNA, ComplementaryGene LibraryDystrophin-Associated ProteinsAmino Acid SequenceBase SequenceMolecular Sequence DataCloning, MolecularDystroglycansSarcolemmaDNARNA, MessengerSarcoglycansMuscle, SkeletalGene ExpressionExonsBlotting, NorthernSequence Homology, Amino AcidSequence Homology, Nucleic AcidTransfection