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doi: 10.1016/0006-8993(76)91038-6
Biochemically, the cobalt center can take part in both two-electron and one-electron reductive processes to access the "reduced" (B 12r , +2 oxidation state) and "super-reduced" (B 12s , +1 oxidation state) forms
For the experiment, 380 mL of the Europan fluid medium was prepared and poured into the chamber under a N 2 gas positive pressure to prevent oxygen and microbial contamination
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