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Effect of As, As + Ai and As + Os treatments in the growth medium on the levels of hydroxyl radical in roots and shoots of rice seedlings at 4 and 8 days of growth. Rice seedlings were raised in hydroponics under control, control + A. indica extract (Control + Ai), Control + O. sanctum extract (Control + Os), 50 µM As (As) and 50 µM As + A. indica extract (As + Ai) and 50 µM As + O. sanctum extract (As + Os). Analyses of the data were similar as described in Fig. 1
