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Free insulin-like growth factorsmeasurements and relationships to growth hormone secretion and glucose homeostasis
It should also be noted that unlike the vitamin B-12 in foods, the purified form of B-12 found in supplements, including regular and sublingual tablets, does not require stomach acid for it to be made available for absorption

J Trace Elem Exp Med

Microbial ecology: human gut microbes associated with obesity (in Eng)
