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17 EhrlichA
Proc Natl Acad Sci USA 87: 71857189
Clinical Studies on B12 & Neuropathy Methylcobalamin: A Potential Vitamin of Pain Killer PMC article: This review covers methylcobalamins analgesic and nerve-repair effects in diabetic neuropathy and other neuropathic pain states
A: The main purification techniques include solvent extraction, crystallization, recrystallization, and chromatographic methods such as HPLC and ion-exchange chromatography
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