Color enhanced Transmission Electron Micrograph (TEM) of subcutaneous tissue showing a white adipose cell with small mitochondria (blue) and large lipid droplet (brown). White adipose tissue composes as much of 20% of the body weight in men and 25% in women. It is used as a store of energy and acts as a thermal insulator. Magnification: 10,000x when printed at 5x6".