Fission + Fusion Event
Mitochondria labelled with a matrix-yellow fluorescent protein filmed every 2 seconds for about 3 minutes and played back at 7 frames per second. You can follow one mitochondrion dividing (bottom right), with the liberated fragment travelling through the cytosol where it fuses with another, more stationary mitochondrion. This is taken from a cropped region of a single COS7 cell grown in culture. This video (and the one below) were taken on an Olympus IX70 through a 100X objective, equipped with a TillPhotonics monochrometer and camera.
