Organ transplantation could be a procedure during which associate organ is aloof from one body and placed within the body of a recipient, to interchange a broken or missing organ. The donor and recipient could also be at a similar location, or organs could also be transported from a donor web site to a different location. Organs and/or tissues that square measure transplanted among a similar person's body square measure referred to as autografts. Transplants that square measure recently performed between 2 subjects of a similar species square measure referred to as allografts. Allografts will either be from a living or body supply.

Organs that are with success transplanted embody the guts, kidneys, liver, lungs, pancreas, intestine, thymus and womb. Tissues embody bones, tendons (both remarked as system grafts), corneae, skin, heart valves, nerves and veins. Worldwide, the kidneys square measure the foremost unremarkably transplanted organs, followed by the liver and so the guts. Corneae and system grafts square measure the foremost unremarkably transplanted tissues; these add up organ transplants by over multiple.

Organ donors could also be living, brain dead, or dead via circulatory death. Tissue could also be recovered from donors WHO die of circulatory death, additionally as of cerebral death – up to twenty four hours past the halt of heartbeat. in contrast to organs, most tissues (with the exception of corneas) will be preserved and keep for up to 5 years, that means they'll be "banked". Transplantation raises variety of bioethical problems, together with the definition of death, once and the way consent ought to tend for associate organ to be transplanted, and payment for organs for transplantation. alternative moral problems embody transplantation touristry (medical tourism) and a lot of broadly speaking the socio-economic context during which organ procurance or transplantation might occur. a selected downside is organ trafficking.There is conjointly the moral issue of not holding out false hope to patients.