Organ transplantation is the moving of an organ from one body to another or from a
donor site to another location on the patient’s own body for the purpose of replacing
the recipient’s damaged or absent organ. The emerging field of regenerative medicine
is allowing scientists and engineers to create organs to be re-grown from the patient’s
own cells (stem cells, or cells extracted from the failing organs). Organs and/or tissues
that are transplanted within the same person’s body are called auto grafts. Transplants
that are recently performed between two subjects of the same species are called allograft.
Allograft can either be from a living or cadaveric source.
Organs that can be transplanted are the heart, kidneys, liver, lungs, pancreas,
intestine, and thymus. Tissues include bones, tendons (both referred to as
musculoskeletal grafts), cornea, skin, heart valves, nerves and veins. Worldwide, the
kidneys are the most commonly transplanted organs, followed by the liver and then
the heart. Cornea and musculoskeletal grafts are the most commonly transplanted
tissues; these outnumber organ transplants by more than tenfold.
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