Figure 1. Two sample experiments showing intrarenal perfusion responses to bradykinin.

Bradykinin was infused into the renal artery (0.6 mg kg⁻¹ h⁻¹) or into the renal medullary tissue (0.3 mg kg⁻¹ min⁻¹). RBF – total renal blood flow measured by renal artery (Transonic) probe; CBF, OMBF, IMBF – laser-Doppler fluxes measured on kidney surface, and in the outer and inner medulla, respectively.