E Quantification of the distance between the centres of GFP−parkin−negative (black bar) or −positive (gray bar) vesicles and the edge of the nearest mitochondrial tubule for the vesicles quantified in antimycin A−treated U2OS:GFP−parkin cells transfected with siDrp1 in (C). Error bars represent the mean ± s.e.m.; *P < 0.05 (obtained by Student's t−test). 