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. 2015 Apr 7;3:e859. doi: 10.7717/peerj.859

Figure 2. The hydrogen (H2) concentration of three treatments (HHW, NHW, and control) over an 8-h period.

Figure 2

(A) Direct examination of H2 concentrations in each container, (B) H2 concentrations in the in vitro experiment, and (C) H2 concentrations in the in vivo experiment as measured in the blood after direct catheterization of hydrogen water into the animal’s stomach.