Table 3. Semiquantitative analysis of tubular necrosis, interstitial fibrosis, mononuclear cell infiltration in control, sham, UO, and UO+H₂S treated rats.

	Tubular necrosis					Interstitial fibrosis				Mononuclear cell infiltration
	n	0	1	2	3	0	1	2	3	0	1	2	3
Control	6	6	0	0	0	6	0	0	0	5	1	0	0
Sham	6	6	0	0	0	6	0	0	0	5	1	0	0
UOa	6	0	0	4	2	0	1	3	2	0	1	3	2
UO+NaHSb	6	1	3	2	0	2	3	1	0	1	1	4	0

Score 0: no degeneration, 1: mild degeneration, 2: moderate degeneration, and 3: severe degeneration

^aStatistical significant difference from the Sham group

^bStatistical significant difference from the UO group and P < 0.05.