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. Author manuscript; available in PMC: 2020 Sep 1.
Published in final edited form as: Clin Perinatol. 2019 Jun 8;46(3):435–447. doi: 10.1016/j.clp.2019.05.001

Figure 1.

Figure 1.

Basic scheme of oxidation-reduction (redox) reactions. Molecule A loses an electron and becomes oxidized while molecule B accepts an electron and becomes reduced. Thus, the net reaction is simply the transfer of the electron from molecule A to molecule B. In the illustration, “n” and “m” refer to the oxidation state of molecules A and B, respectively. When electrons are lost, the oxidation number increases (An+1). Conversely, when electrons are gained, the oxidation number decreases (Bm−1).