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. 2020 Jan 11;35(1):ME19103. doi: 10.1264/jsme2.ME19103

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2020 by Japanese Society of Microbial Ecology / Japanese Society of Soil Microbiology / Taiwan Society of Microbial Ecology / Japanese Society of Plant Microbe Interactions / Japanese Society for Extremophiles.

This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Fig. 2. — Stable hydrogen and oxygen isotope composition of groundwater samples (●) compared with those of local surface water (◇), normal seawater (□), and ancient seawater (△) (Maekawa et al., 2006; Kato et al., 2011). Dashed line: global meteoric water line (Craig, 1961). VSMOW, Vienna Standard Mean Ocean Water.