Robert Dixon received the call around midnight. They had found a kidney for him.

After four years on the waiting list, Robert was weary of three-times-a-week dialysis. He wanted the energy to run his small business and to devote time to his wife, June, and their two teen-age children. So Robert was excited as he drove to the hospital. The doctor had told him that he had a 98 percent chance of the transplant being successful. The D.C. streets were quiet, but still it seemed forever until he pulled into the hospital driveway.