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doi: 10.1053/j.gastro.2007.04.007 97 SeufertJNauckMRosenstockJHansenTVrazicHVilsbollT
The three forms of vitamin B12, cyanocobalamin, methylcobalamin, and adenosylcobalamin have been shown to have different conversion and absorption rates, with methylcobalamin (the naturally occurring form of B12) regarded as the most optimal for assisting in the methylation cycle
10.1039/c5nr02247a Nanoscale
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