ALFRED PASIEKA / SCIENCE PHOTO LIBRARY ALFRED PASIEKA / SCIENCE PHOTO LIBRARY
Adrenaline (epinephrine) is a hormone and a neurotransmitter. It is used to treat a number of conditions like cardiac arrest, anaphylaxis, and superficial bleeding. Atoms are represented as spheres and are colour-coded: carbon (grey), hydrogen (blue-green), nitrogen (blue) and oxygen (red).
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