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Vitamin B12 is part of the vitamin B-complex range, which is a class of water-soluble vitamins essential for cell growth and development
USA 110 , 52115216 (2013)
It remains a research chemical, and its use in humans is primarily limited to clinical studies, though it is not universally banned
Sterility is a major concernwithout proper cleanroom standards, bacterial contamination and endotoxins are very real possibilities," she says
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