Figure 4.

Quantitative representation of positive intrarenal hypoxia inducible factor-1 (HIF-1α) immunostaining/μm². Values are expressed as percentage ± SEM. n = 5-6. *P < 0.05 versus respective NS control; ^# P < 0.05 versus respective control without tempol. NS: normal salt diet group, HS: high salt diet group, NS-T: normal salt diet plus tempol group, HS-T: high salt diet plus tempol group. PT: proximal tubule, DT: distal tubule, CCD: cortical collecting duct, THAL: thick ascending limb of the loop of Henle, and MCD: medullary collecting duct.