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Two trials reported data for serum vitamin B 12 levels
Perfect for those building strength and optimizing body composition
They act on different receptors, through different pathways, with different effects on the growth-hormone pulse which is precisely why they're so often studied together rather than chosen one over the other
PLoS Genet 12 , e1005800 (2016)
Regulation of polysaccharide in Wu-tou decoction on intestinal microflora and pharmacokinetics of small molecular compounds in AIA rats
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