Table 1.

Chromosomal Aberrations Found Directly After Chronic Oxidative Stress.

Treatment*	Percentage of Aberrant Metaphases†	Percentage of metaphases without human chromosome 4‡
Controls	0.2	0.8
H2O2, 25 µm	0.3	1.6
H2O2, 50 µm	0.4	4.6
H2O2, 100 µm	4.3	11.3
GO, 5 mU/ml	1.0	1.3
GO, 10 mU/ml	2.0	2.7
GO, 25 mU/ml	1.6	4.0

^*One thousand total metaphases scored for each treatment.

^†Percentage of metaphases containing rearrangements involving human chromosome 4.

^‡Percentage of metaphases not containing human chromosome 4.