ALFRED PASIEKA / SCIENCE PHOTO LIBRARY ALFRED PASIEKA / SCIENCE PHOTO LIBRARY
Noradrenaline (norepinephrine), belonging to the group of catecholamines, molecular model. Catecholamine acting also as a hormone and a neurotransmitter. Atoms are represented as spheres and are colour-coded: carbon (grey), hydrogen (blue-green), nitrogen (blue) and oxygen (red).
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