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Finally, B12 is required to make myelin, the protective layer that coats nerve cells. B12 also works alongside folate to produce red blood cells, and without adequate B12 those cells grow abnormally large and lose their ability to carry oxygen efficiently
J Physiol 559:169186 Aoyama K, Watabe M, Nakaki T (2008) Regulation of neuronal glutathione synthesis
The first month felt like nothing was happening
Zuelke, K
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