Figure 1. .

NSE concentration [NSE] and age in subclinical LHON carriers. Thirty-two (70%) of 46 carriers had [NSE] lower than 20 μg/L. Of carriers with [NSE] higher than 20 μg/L, 9 (64%) of 14 were males, and of those with [NSE] higher than 100 μg/L, all (5/5) were male.