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. 2021 Aug 2;61(1):329–340. doi: 10.1007/s00394-021-02651-8

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© The Author(s) 2021

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Fig. 4 — NAD⁺ metabolite abundances measured in liver of control mice on a 30 mg NR/kg diet compared to mice on a 0 mg NR/kg diet (t = 18 weeks). a Methylnicotinamide (MeNAM), b nicotinamide adenine dinucleotide (NAD), c NADH, d NADP, e NADPH, f nicotinamide (NAM), g nicotinamide mononucleotide (NMN), h phosphoribosyl pyrophosphate (PRPP), i Ribose-5 phosphate (ribose-5P), j Tryptophan. Significant differences of p < 0.05 are indicated with *. Values are means ± SEM (n = 12)