A method for repairing tissue of a selected organ from among heart, brain, liver, pancreas, kidney, glands, and muscles in a patient's body. Adult stem cells that have the capability to repair tissue of the selected organ are recovered by harvesting from the patient's body. The harvested stem cells are then intraluminally applied through a designated natural body vessel. During the time the stem cells are being applied to the targeted tissue downstream, the designated vessel or duct is selectively occluded to increase concentration and pressure of the applied adult stem cells by the vessel.