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(A) Pressures and (B) pulsatility index of the portal vein (PV) before and after inducing portal hypertension (PH) in all dogs in the low-flow group. (C) PV pressures and (D) pulsatility index before and after inducing PH in all dogs in the high-flow group. In panels C and D, the open symbols denote the dogs in which PH was not achieved (that is, the increased flow in the PV arose only from the femoral artery).
