LAGUNA DESIGN / SCIENCE PHOTO LIBRARY LAGUNA DESIGN / SCIENCE PHOTO LIBRARY
Arachidonic acid. Molecular model of the polyunsaturated omega-6 fatty acid known as arachidonic acid (C20.H32.O2). This chemical is found in the membranes of the body's cells. Atoms are represented as spheres and are colour-coded: carbon (grey), hydrogen (white) and oxygen (red).
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