Table 4.

Quantification of iNOS expression in Zucker rat kidney presented as rank order.

Animal Group	Age	Tubules (#)		IHC score
		Cortex	Medulla	Cortex	Medulla
REG Female	6 w	27.67	19.00	33.83	13.50
REG Female	20 w	21.00	9.50	21.38	10.50
REG Male	6 w	26.00	6.93	23.38	12.21
REG Male	20 w	12.67	12.25	16.42	10.50
AO Female	6 w	17.00	16.83	24.33	18.83
AO Female	20 w	26.50	28.00	27.75	31.50
AO Male	6 w	41.17 θ *	23.83 *	25.83	23.83 *
AO Male	20 w	15.33 #	13.00#	15.83	14.75

Rank order values are based on non-parametric analysis using the Kruskal-Wallis test. ^{*, θ, #} significantly different, p < 0.05,

^*- REG vs AO,

^θ- Female vs Male,

^#- 6 vs 20 weeks. iNOS immunostaining was not observed in glomeruli.