The four-year-old son of state Representative Eric Harris of Lowell has a new kidney, and it came from his dad. Harris underwent surgery June first at the Cincinnati Children`s Hospital to donate his left kidney to his son, Jackson. The boy has now left the hospital`s intensive care unit and is in a private room at the hospital. Harris` business partner says the father has already been discharged from the hospital, but is still recuperating at a nearby motel. Prior to birth, Jackson Harris was diagnosed with a condition that impaired the function of both kidneys. After testing in February, doctors recommended a transplant be scheduled to avoid dialysis. Mendenhall says the prognosis is good for both father and son.