31.   They need the procedures to live, but they are running out of time before they are considered too ill to be a good candidate for a donor organ.

32.   Those lucky enough to receive a donor organ will still face a daunting fight for survival, forced to swallow a daily dose of immunosuppressive drugs.

33.   Twelve other patients died while awaiting transplant, victims of the overwhelming shortage of donor organs.

34.   Urgency to solve the xenotransplant problem is growing daily, because transplant researchers believe the practical limit on the supply of human donor organs has almost been reached.

35.   When a donor organ becomes available, it is allocated first to patients in the local organizations, then the region, then nationwide.

36.   When donor organs become available, they are allocated to patients who are sickest and have been waiting the longest, said Betsy Strock at the organ bank.

37.   Will that solve the shortage of donor organs?

38.   British bioethics expert Dr. Rachel Bartlett said the starting point is the situation faced by people in need of transplants but unable to find donor organs.

39.   By developing a pig genetically engineered to carry human DNA, researchers may be able to keep humans from rejecting non-human donor organs.

40.   The doctors had planned to give Linzmeier a new heart as soon as a donor organ was available.