Pernicious problem: B12 stacks up
 

Pernicious problem: B12 stacks up

http://www.spectroscopynow.com/commo...40c51622ab.jpgVitamin B12, also known as the antipernicious anaemia factor, is an essential nutrient for humans. Now, British scientists have pinned down the mechanism and route of its biosynthesis using electron paramagnetic resonance EPR) and other techniques in what has often been referred to as the "Mount Everest of biosynthetic problems".

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