The proportion of proliferating SSCs (Pax7+MyoD+) in the DM1-03 group was lower than that in the DM1-04 group, while that in the DM1-13-3 group was higher than that in the DM1-03 group, but was lower than that in the DM1-04 group (Fig. 1b, c). Here, MYOD1 is linked to myotonic dystrophy type 1.