Fig. 2From: Mitochondrial DNA variants correlate with symptoms in myalgic encephalomyelitis/chronic fatigue syndromeHeteroplasmy frequency spectrum within cohort. Heteroplasmy count (x-axis) refers to the number of heteroplasmies present in an individual. Frequency (y-axis) refers to the proportion of individuals with the given number of heteroplasmies in each case or control populationBack to article page