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This limits the proliferation of Enterococcus and Klebsiella pneumoniae , while also inhibiting excessive growth of Escherichia coli through the induction of antimicrobial peptides
Skin discoloration Noticeable changes to the color of the skin may also indicate a vitamin B12 deficiency
Diabetes Care , 1998
Its small size and lack of cysteine residues make it relatively stable in handling compared with larger disulfide-containing peptides
This redox chemistry also governs handling: the reduced powder is stable dry, but in aqueous solution and in contact with air it converts to GSSG
The NHS advises that taking up to 2mg (2000 micrograms) daily of vitamin B12 supplements is unlikely to cause harm, with no established upper limit in the UK
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