DystrophinMuscular Dystrophy, DuchenneMice, Inbred mdxUtrophinDystrophin-Associated ProteinsMuscular Dystrophy, AnimalMuscular DystrophiesMorpholinosExonsMuscle, SkeletalOligonucleotides, AntisenseMuscle ProteinsGenetic TherapyDystroglycansMice, Inbred C57BLSarcolemmaSarcoglycansCytoskeletal ProteinsDystrophin-Associated Protein ComplexMusclesMuscle Fibers, SkeletalOligoribonucleotides, Antisense