Fig. 4
From: Elimination of mutagenic contaminants from water using cellulose bearing ferrous-phthalocyanine
Mutagenicity of the sample (0.1 mL) of supernatant obtained from MX (0, 1, 5 μM) solution at pH 4.0 (a) or pH 7.4 (b) treated with no-powder control (NP, white) or WP (shaded) or GP (black). The experiment was repeated twice, and the error bar represents the SD (n = 3). *p < 0.05, significantly different from no-powder control and WP using Tukey test