Table 4 : Ames Fluctuation Test results for Hospital A and B.


Hospital A Pit 2 Pit 3 Pit 4 Pit 5

Sample dilution ×1/2 ×1 ×1/2 ×1 ×1/2 ×1 ×1/2 ×1
Without activation 1.70 2.50b 2.50b 5.20c 6.80c 9.40c 2.20 4.00c
With activation 2.00a 3.55c 4.00c 7.55c 6.43c 11.57c 2.14a 3.43c

Hospital B Pit 1 Pit 3 Pit 4 Pit 5

Sample dilution ×1 ×1 ×1  ×1
Without activation 0.42 0.71 1.40 0.61
With activation 0.72a 1.41a 1.76b 1.20a

Mutagenicity Ratios (MR) were calculated and their significance was evaluated by
Chi-Square Analysis (ap<0.05; bp<0.01; cp<0.001). Genotoxic samples are indicated in bold.

Abdel-Massih et al.Journal of Environmental Engineering and Ecological Science  2016 5:2DOI : 10.7243/2050-1323-5-2