Fig. 1. Comparative analyses of parameters of renal function: BUN, blood urea nitrogen (a), NCCtrl n=5, NCCaf n=10, CyCtrl n=7, CyCaf n=10, and cystatin C (b), NCCtrl n=5, NCCaf n=8, CyCtrl n=6, CyCaf n=9. Caffeine: cystic (CyCaf) and noncystic (NCCaf) and controls: cystic (CyCtrl) and noncystic (NCCtrl).* p< 0.05; ** p<0.01, *** p<0.001.