LAGUNA DESIGN / SCIENCE PHOTO LIBRARY LAGUNA DESIGN / SCIENCE PHOTO LIBRARY
Lutein. Molecular model of the naturally occurring carotenoid lutein (C40.H56.O2). This chemical, found in green leafy vegetables, has been used as a natural colourant due to its orange-red colour. Atoms are represented as spheres and are colour-coded: carbon (grey), hydrogen (white) and oxygen (red). Illustration.
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