BO VEISLAND / SCIENCE PHOTO LIBRARY BO VEISLAND / SCIENCE PHOTO LIBRARY
Fat cell anatomy. Artwork of an adipocyte (fat cell) and its internal organelles. The majority of the cell is filled with a lipid (fat) droplet. Also seen are the cell's nucleus (blue), mitochondria (blue), which produce energy, and golgi apparatus (green), which modify and pack proteins, and rough endoplasmic reticulum (purple). Adipocytes form adipose tissue, which stores energy as an insulating layer of fat.
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