STEVE LOWRY / SCIENCE PHOTO LIBRARY STEVE LOWRY / SCIENCE PHOTO LIBRARY
Polarised light micrograph of fatty acids extracted from human fat. Fatty acids are critical for normal human existence. They serve as a source of energy, as structural components for nerves and cell membranes, and as precursors in hormone production. A good balance of essential and non-essential fatty acids promotes health and extends lifespan. Magnification: x14 at 10cm wide.
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