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Some doctors recommend its supplementation to treat cancer, as it increases the effectiveness of chemotherapy drugs and reduces their toxicity
doi:10 } : CS1 maint: DOI inactive as of July 2025 (link) Intensive Care Medicine
B12 deficiency may result from a vegetarian or vegan diet, as B12 naturally occurs in animal foods
& Palma-Diaz, M
J Biol Chem 250:14221426 Huang CS, Moore WR, Meister A (1988) On the active site thiol of gamma-glutamylcysteine synthetase: relationships to catalysis, inhibition, and regulation
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