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Neuropathy is believed to result from pyridoxine neurotoxicity to dorsal root ganglia when plasma levels are excessively high
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George, UT)
[127] [128] Synthesis [edit] Biosynthesis [edit] Vitamin B 12 is derived from a tetrapyrrolic structural framework created by the enzymes deaminase and cosynthetase which transform aminolevulinic acid via porphobilinogen and hydroxymethylbilane to uroporphyrinogen III
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