DMD and hyperinsulinemic hypoglycemia, familial, 4: Mitochondria of dys-1(cx18);hlh-1(cc561ts);drp-1(tm1108) mutant worms appeared less circular, longer and with the occasional presence of interconnecting mitochondrial strings when compared to those of dys-1(cx18);hlh-1(cc561ts) mutant worms (Figs 1G,J,L and S1A–D), reflecting a rescue of the mitochondrial fragmentation phenotype induced by dystrophin deficiency.