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However, under reducing conditions, the cobalt center is reduced to Co(II) or even Co(I), which are usually denoted as B 12r and B 12s , for reduced and super reduced respectively

G., Maroto, R., Wang, H

Think of it this way: GHK-Cu tells cells what to build

[DOI] [PMC free article] [PubMed] [Google Scholar] Kumar RS, Shen C-H, Wu P-Y, Kumar S, Hua MS, Yeh K-Y