Deceased donors are individuals who have passed away and whose organs or tissues can be used for transplantation. This process typically occurs after a person has been declared brain dead or has suffered cardiac death. The organs that can be donated include the heart, kidneys, liver, lungs, pancreas, and intestines, among others. The use of deceased donors is crucial in addressing the shortage of available organs for patients in need of transplants. Organizations like the United Network for Organ Sharing (UNOS) manage the allocation of these organs, ensuring they are matched to recipients based on medical need and compatibility.