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Velocity streamlines for the AVF and contralateral non-surgery controls. The color bars are adjusted to emphasize the velocity distributions in the vein (a) and artery (b). The velocity was averaged over a cardiac cycle. Black arrows indicate the direction of overall blood flow. Black arrow heads indicate flow jet into the AVF vein, with velocity of this flow jet increasing from day 7 to day 21. Red arrow heads indicate recirculating disturbed flow in the AVF vein near the anastomosis
