From: Comet assay based DNA evaluation of fuel filling stations and automobile workshops workers from Khyber Pakhtunkhwa province, Pakistan
Comet class
0
1
2
3
4
TCS
Exposed group
21.6 ± 13.4
32.5 ± 14.2
15.8 ± 11.9
11.3 ± 9.9
18.7 ± 9.4
173.2 ± 50.1*
Control group
67.7 ± 13.0
16.2 ± 8.0
7.1 ± 4.4
5.3 ± 4.1
3.7 ± 2.3
61.0 ± 25.0