A, Renal blood flow (RBF) in uninephrectomized, anesthetized rats during normal or high renal perfusion pressure (RPP) in rats with an intact renal capsule (white bars, n=8), after partial decapsulation (Decap) (black bars, n=8), or after partial decapsulation with RI cortical infusion of cGMP during the experimental period (gray bars, n=8). Results are reported per gram (g) kidney weight. B, Glomerular filtration rate (GFR) in response to normal or high RPP in rats under conditions in A (intact capsule, n=8; partial decapsulation, n=8; partial decapsulation with RI cortical infusion of cGMP during the experimental period, n=8). Results are reported per gram (g) kidney weight. Data are shown as mean ± SE. **P<0.01, *P<0.05 vs own control.