Methods for inducing skipping of exons, including exon 51 of the dystrophin gene. Oligonucleotides are used for inducing exon skipping and for treating Duchenne Muscular Dystrophy. Disclosed structures include: (1) h51AON1 (SEQ ID NO: 27; UCAA GGAA GAUG GCAU UUCU), which is 20 bases long, (2) h51AON2 (SEQ ID NO: 28; CCUC UGUG AUUU UAUA ACUU GAU), which is 23 bases long, and (3) the combination of h51AON2 and h45AON5 linked by 10 uracils (i.e., SEQ ID NO: 28 (CCUC UGUG AUUU UAUA ACUU GAU) linked to SEQ ID NO: 16 (GCCC AAUG CCAU CCUG G) by UUUU UUUU UU), which combination is 50 bases long.