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Whats the best form of B12 for hair loss
NAD+ synthesis and phosphatidylcholine synthesis both consume SAMe, creating potential substrate competition
Following receptor-mediated endocytosis within lysosomes of peripheral target cells, transcobalamin is degraded, the CD320 receptor is recycled to the plasma membrane, and cobalamin, no longer complexed to a protein, can enter the cytoplasm via lysosomal transporters for utilization by the enzymes methionine synthase (MTR) and L-methylmalonyl-CoA mutase (MUT) (and may even be exported) (179)
Research protocols often recommend refrigeration after reconstitution and limited use windows (e.g., 728 days depending on the compound)
PMC 3183530
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