practices of each company. Other transplant options Autograft, tissue transplanted from one site to another on the same patient. An autograft reduces the risk of rejection but requires a second surgery site, adding pain, risk and possible longer aftercare. Xenograft, a transplant from another species Isograft, a transplant from a genetically identical donor, such as an identical twin. Synthetic and metal implants. Unlike allografts, such grafts do not corporate into the body. Risks As with many operations, allotransplantation risks some side effects. A limiting factor in tissue allotransplantation for reconstructive surgery deals with the side effects of immunosuppression (metabolic disorders, malignancies, opportunistic infections) which is a predominant issue. The risk of transmitting infection is high. See also Allograft diseases Medical grafting References External links https://web.archive.org/web/20160303183943/http://www.aatb.org/files/safetyoftissuetransplants.pdf https://www.cdc.gov/ncidod/dhqp/tissueTransplantsFAQ.html#top https://www.fda.gov/BiologicsBloodVaccines/TissueTissueProducts/default.htm https://web.archive.org/web/20101126080809/http://organdonor.gov/donor/registry.shtm (How to register to be a donor in the USA) Allogeneic stem cell transplantation entry in the public domain NCI Dictionary of Cancer Terms Allogeneic bone marrow transplantation entry in the public domain NCI Dictionary of Cancer Terms Transplantation medicine Immunology