Fig. 4

Platelets of maternally associated ALS patients show a higher heteroplasmic mtDNA mutation load. a–c The number of heteroplasmic mutations is shown per subject and d–g per significant gene for whole blood a, d, white blood cells b and platelets c, e, f, g. (Data are illustrated as mean ± SD, Kruskal–Wallis with Dunn’s correction for multiple comparison, *p ≤ 0.05, **p ≤ 0.01)