Damage or loss of a tissue or organ is common, costly, and tragic. Advances
in mechanical artificial organs and organ transplantation have improved th
e treatment of organ failure, and advances in molecular immunology, tissue
engineering, and stem cell biology offer the promise of even better therape
utic modalities for treating organ failure in the future. Enhancement of im
mune tolerance of transplanted tissues, improved understanding of cellular
differentiation and tissue development, and advances in biomaterials may en
able the de novo creation of implantable tissue and organs for transplantat
ion, Innovative techniques for prevention and treatment of tissue loss and
organ failure should improve the quality and length of life.