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Fig. 7 | Zoological Letters

Fig. 7

From: Calcium ions in the aquatic environment drive planarians to food

Fig. 7

Comparison of ion concentrations among rivers in Japan and water characteristics used in this study. Concentrations of calcium, potassium, and sodium ions in rivers throughout Japan are indicated by gray dots. Concentrations of calcium, potassium, and sodium ions of tap water and Kanatani water are indicated by red dots. Both the tap water and Kanatani water contain a relatively high concentration of ions compared to those of rivers in Japan. Circles and vertical bars are mean ± sd

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