Images of peridroplet mitochondria. A. Living cultured brown adipocytes with lipid droplets stained with BODIPY (green) and mitochondria stained with MitoTracker Red (red). White line denotes peridroplet mitochondria. B. Electron micrograph of brown adipose tissue demonstrating mitochondria (red line) associated with a lipid droplet (LD). C. Isolated brown adipose tissue lipid droplets stained with BODIPY and MitoTracker Red, note the adherence of mitochondrial particles to lipid droplets. D. Living cultured INS-1 insulinoma cells over-expressing the lipid coating protein Plin5, which recruits mitochondria to lipid surface, stained with DAPI, BODIPY, and MitoTracker. Cell boarder marked by white line.