From: Rapid assessment of the effect of ciprofloxacin on chromosomal DNA from Escherichia coli using an in situ DNA fragmentation assay
Dose (μg/ml)
Width of dispersion (μm)
Class
Range
0
-
0.003
0.006
0.008
0.012
1.3 ± 0.3
I
≤ 2.0
0.02
1.6 ± 0.3
0.04
2.5 ± 0.4
II
2.1 – 3.7
0.08
3.3 ± 0.4
0.1
5.1 ± 1.0
III
3.8 – 5.7
0.5
7.8 ± 1.4
IV
≥ 5.8
1
8.8 ± 1.6