Late Endosome
Mitochondria labelled in red appear to swarm a late endosome (green). In this cell, the late endosomes have been enlarged to better examine the contacts between these organelles. We do not know what the function of these contacts may be, possibly to extract fatty acids that were internalized into the late endosomes. The mitochondria will break down and burn fatty acids as a source of fuel. This video highlights the dynamic nature of mitochondrial contacts with other cellular organelles.