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Clinical Neuropharmacology, 16 (6), 540-549
What Gambit62 said is exactly what you have done
ambient storage pushes the practical window toward the label number
10.1016/j.brainres.2006.07.108
One possible explanation is that low serum vitamin B12 levels would trap folate as 5-methyltetrahydrofolate, prevent the generation of methionine from homocysteine, and therefore reduce protein synthesis and lean tissue deposition
