DR TIM EVANS / SCIENCE PHOTO LIBRARY DR TIM EVANS / SCIENCE PHOTO LIBRARY
Oleic acid. Computer model of a molecule of oleic acid, a monounsaturated fatty acid. Atoms are represented as spheres and are colour-coded: carbon (green), hydrogen (white) and oxygen (red). Oleic acid is the main constituent of olive oil. High concentrations of oleic acid can lower the levels of bad (LDL) cholesterol in the blood.
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