Fig. 1. Peripheral benzodiazepine receptor-enhanced green florescent protein (PBR-EGFP) expression and colocalization with mitochondria in the human umbilical vein endothelial cells. The subcellular localization of PBR-EGFP (living color of green fluorescence) and mitochondria (red fluorescence with MitoTracker Red; Invitrogen, Carlsbad, CA) was assessed by immunofluorescent staining. Fluorescence image of PBR-EGFP and mitochondria are merged in right image.