(A) Electron micrograph of a human cell section showing three mitochondria ... ubiquinone in green labeled with a Q; cytochrome c reductase in light blue; cytochrome c in dark blue labeled ...

This is a colorized transmission electron micrograph of cellular mitochondria, which produce a small molecule called ATP. Inside cells, ATP serves as an energy source but released outside the cell ...

Inner membranes of live mitochondria under a STED microscope ... Sample preparation is much easier for an optical microscope than a Transmission Electron Microscope (TEM), requiring about an ...