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Fat cell. Coloured scanning electron micrograph (SEM) of an adipocyte (fat cell, large, centre). Surrounding the adipocyte are white blood cells (small, around the edges). Adipocytes store energy as an insulating layer of fat and the majority of the cell's volume is taken up by a large lipid (fat or oil) droplet. Fat accumulation starts with a few small lipid droplets (small green blobs) which coalesce to make one large droplet. When mature, the adipocyte may be 10 or 20 times its original size. Magnification: x6000 when printed at 10 centimetres wide.
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