The young couple sat in the waiting room of the doctor's office with their heads hung low. They mumbled between themselves, wondering what the doctor would say at this visit. It is their ump-teenth check-up to try and figure out why they have not been able to conceive a child for the past 5 years. The woman wants with all of her heart to give birth to a child of her very own. They wondered if the doctor could do anything else to help them. Would the dream of having a baby of the couple's own blood vanish? Would the doctor have any other suggestions? Is this the end of their rope, or is there another option"

Only a few blocks away, at the General Hospital, lies a one-week-old girl with bronchiolitis obliterans, a disease that causes her body to reject her own lungs. The doctors recommend she receive...