TABLE 1:

Percentage of damaged cells and DNA damage index in mouse hepatocytes after H₂O₂ treatment.

		Damaged cells (%)		DNA damage index
Animals	H2O2	Arithmetic mean	SE	Arithmetic mean	SE
Young-adult BALB/c	No	21.38a	04.7	034.72a	08.60
	Yes	53.75*	14.6	111.97*	29.50
Normoglycemic BALB/c	No	20.67a	03.0	037.58a	06.11
	Yes	53.40*	12.4	105.09*	24.30
Normoglycemic NOD	No	22.58a	04.1	040.89a	09.32
	Yes	56.30**	11.5	128.72*	31.50
Hyperglycemic NOD	No	43.78b	03.8	084.23b	09.97
	Yes	61.57*	13.8	148.77*	38.50
Old BALB/c	No	25.46a	02.6	048.34a	06.27
	Yes	63.09*	14.5	159.75*	30.60

*Difference from H₂O₂ treatment significant at P < 0.05 (Student's t test); different subscript letters a and b in the same column indicate statistical differences significant at p < 0.05 (ANOVA).