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Description
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doi: 10.1038/ng.275

IGF-1 is mostly produced by the liver and delivered into the bloodstream, Its physiological function is generally controlled by IGF-1 receptor and IGF-binding proteins

(1980) Toxic nephropathy from diagnostic and therapeutic agents

That dosage range isn't arbitrary

Under physiological conditions, more than 98% of total GSH occurs in the reduced form [9,10]
