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Grafting refers to a surgical procedure to move tissue from one site to another on the body, or from another person, without bringing its own blood supply with it. Instead, a new blood supply grows in after it is placed. A similar technique where tissue is transferred with the blood supply intact is called a flap. In some instances a graft can be an artificially manufactured device. Examples of this are a tube to carry blood flow across a defect or from an artery to a vein for use in hemodialysis. ==Classification== Autografts and isografts are usually not considered as foreign and, therefore, do not elicit rejection. Allografts and xenografts are recognized as foreign by the recipient and are rejected.〔Textbook of Microbiology, R. Vasanthakumari, p166, 2007, New Delhi, ISBN 978-81-7225-234-2〕 * Autograft: graft taken from one part of the body of an individual and transplanted onto another site in the same individual, e.g., skin graft. * Isograft: graft taken from one individual and placed on another individual of the same genetic constitution, e.g., grafts between identical twins. * Allograft: graft taken from one individual placed on genetically non-identical member of the same species, e.g., the majority of grafts are allografts. * Xenograft: graft taken from one individual placed on an individual belonging to another species, e.g., animal to man. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Graft (surgery)」の詳細全文を読む スポンサード リンク
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