Genotoxic activity of organic extracts in water samples detected by SOS/<i>umu</i> test from six sampling locations in Guangzhou drinking water source.

<p>Lower-case letters indicated pair-wise comparison in the dry season in different sampling regions at the same water level and upper-case letters indicated pair-wise comparison in the wet season in different sampling regions at the same water level. *indicated the significant difference from the wet season.</p

Relationship between the mutagenic ratio on TA98 without S9 activation and IR by SOS/<i>umu</i> test without S9 activation.

<p>Relationship between the mutagenic ratio on TA98 without S9 activation and IR by SOS/<i>umu</i> test without S9 activation.</p

Evaluation of Genotoxic and Mutagenic Activity of Organic Extracts from Drinking Water Sources - Fig 2

<p><b>Mutagenicity of TA98 (a) and TA100 (b) detected by Ames test without S9 mix in organic extracts from source water at dose 0.25L (c), 0.5L (d), 1.0L (e) and 2.0L (f) collected during the dry season at six sampling locations in Guangzhou drinking water source</b>. Lower-case letters and upper-case letters indicated pairwise comparison in the TA98 and TA100 in the different sampling regions at the same water level, respectively. *indicated the significant difference compared with the strain TA100 at the same water level in the same sampling regions.</p