 F-I Confocal images of cells transfected with mito-YFP and treated with DMSO (F, control) or IU1 (G) for 24h. Fragmentation index (H) and total mitochondrial volume / cell were measured and represented in (I), mean ±SEM. At least 35 cells were analysed from 3 different experimental conditions. Scale bar 10 μm 