Table 2.

Dose ranges of Chromosomal aberration assay

Treatment series	Metabolic activation	Treatment time - recovery time (hr)	Dose of SEP (μg/ml)	Positive control and dose (μg/ml)
1	+	6-18	0, 275, 550, 900, 1100	B[a]P 20
2	−	6-18	0, 150, 300, 600, 700	EMS 800
3	−	24-0	0, 150, 300, 600, 700	EMS 600