Linda Alcorace is told about the chances that her liver will fail, while Gary Bush learns how to keep his body from rejecting his new kidney. Rick Williams and Abraham Madrigal count their days while waiting for new hearts. And parents of children receiving transplants learn to take one day at a time. The gift of life is indeed a miracle, but waiting for it and taking good care of it require an intimate relationship with tests and numbers that tell the story of organ function.