Table III.

CBMN frequencies distribution in control group

Number of micronucleus (‰)	Controls			Exposed
	Frequency	%	Cumulative %	Frequency	%	Cumulative %
0	49	34.8	34.8	12	3.0	3.0
1	47	33.3	68.1	31	7.7	10.7
2	20	14.2	82.3	51	12.7	23.4
3	17	12.1	94.3	62	15.4	38.8
4	6	4.3	98.6	63	15.7	54.5
5	2	1.4	100.0	63	15.7	70.1
6	0	0	100.0	37	9.2	79.4
7	0	0	100.0	31	7.7	87.1
8	0	0	100.0	21	5.2	92.3
9	0	0	100.0	10	2.5	94.8
10	0	0	100.0	8	2.0	96.8
11–15	0	0	100.0	13	3.2	100
Total	141	100.0	100.0	402	100.0	100.0