Fig. 2. Comparative analyses of renal cAMP levels (a), NCCtrl n=7,  NCCaf n=5 , CyCtrl n=5 , CyCaf n=4 ; renal p-ERK/ERK levels (b), NCCtrl n=5, NCCaf n=5, CyCtrl n=5, CyCaf n=4 and renal concentration capacity (maximum urine osmolality, UosmMax) (c), NCCtrl n=9 , NCCaf n=8, CyCtrl n=6, CyCaf n=6, among groups at 10-12 weeks. Caffeine: cystic (CyCaf) and noncystic (NCCaf) and controls: cystic (CyCtrl) and noncystic (NCCtrl). * p<0.05, ** p<0.001.