CAROL AND MIKE WERNER / SCIENCE PHOTO LIBRARY CAROL AND MIKE WERNER / SCIENCE PHOTO LIBRARY
Molecular model of Nicotinamide adenine dinucleotide (NAD+), a coenzyme found in all living cells. It's considered a dinucleotide, as it has two nucleotides joined through their phosphate groups. One nucleotide has an adenine base and the other nicotinamide. NAD+ is an oxidizing agent.
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