Fig. 5
Viability test of RSa cells treated with and without water samples from the first-class rivers in the Kanto and Koshinetsu region （A）, Tohoku region （B）, and Tokai, Hokuriku, and Chubu region （C）. Bars represent ±SD. *, P＜0.05 vs. average.
Fig. 5
Viability test of RSa cells treated with and without water samples from the first-class rivers in the Kanto and Koshinetsu region （A）, Tohoku region （B）, and Tokai, Hokuriku, and Chubu region （C）. Bars represent ±SD. *, P＜0.05 vs. average.