As the anesthetic wore off, Naseem Mohammed said, he felt an acute pain in lower left side of his abdomen. Fighting drowsiness, he fumbled beneath the unfamiliar folds of a green medical gown and traced his fingers over a bandage attached with surgical tape. An armed guard by the door told him that his kidney had been removed. Mr. Mohammed was the last of about 500 Indians whose kidneys were removed by a team of doctors running an illegal transplant operation, supplying kidneys to rich Indians and foreigners, police officials said. A few hours after his operation last Thursday, the...