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ncbi.nlm.nih.gov/pmc/articles/PMC7345585 U.S
Cells characterized by rapid division (epithelial cells, bone marrow, myeloid cells) appear to have the greatest requirement for methylcobalamin
Vitamin B12 has a complex biological activity and takes part in protein synthesis particularly in neuronal and hepatic tissues
Intestinal epithelial sirtuin 1 regulates intestinal inflammation during aging in mice by altering the intestinal microbiota
The two most studied are nicotinamide riboside (NR) and nicotinamide mononucleotide (NMN)
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