Immortalized canine dystrophic myoblast cell lines for development of peptide-conjugated splice-switching oligonucleotides by Tone, Y, Mamchaoui, K, Tsoumpra, MK, Hashimoto, Y, Terada, R, Maruyama, R, Gait, MJ, Arzumanov, AA, McClorey, G, Imamura, M, Takeda, S, Yokota, T, Wood, MJA, Mouly, V, Aoki, Y