| TARA | total articular replacement arthroplasty; tumor-associated rejection antigen |
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| TRF | T-cell replacing factor; thyrotropin-releasing factor; tubular rejection fraction |
| CR | Chronic rejection |
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| DXR | Delayed xenograft rejection |
| HAR | Hyperacute rejection |
| AR | allograft rejection |
| acute rejection | Graft rejection which usually begins within 10 days after a graft has been transplanted into a genetically dissimilar host. Lesions at the site of the graft characteristically are infiltrated with large numbers of lymphocytes and macrophages which cause tissue damage. See: primary rejection. Synonym: acute rejection. (05 Mar 2000) |
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| allograft rejection | The rejection of tissue transplanted between two genetically different individuals of the same species. Rejection is caused by T lymphocytes responding to the foreign major histocompatibility complex of the graft. Synonym: homograft. (05 Mar 2000) |
| parental rejection | Withholding of affection from or denial of attention to one's child. Child's withholding of affection from its parent. (05 Mar 2000) |
| rejection | 1. <immunology, surgery> Usually used of grafts. Any process leading to the destruction or detachment of a graft or other specified structure. 2. <psychology> Non-acceptance, negative attitudes, hostility or excessive criticism of the individual which may precipitate feelings of rejection. (12 Dec 1998) |
| graft rejection | <haematology, immunology> When donated bone marrow infused during a bone marrow transplant is rejected by the patients body or does not take. (16 Dec 1997) |
| chronic allograft rejection | Immunologically mediated damage to the allograft, typically a kidney allograft, manifested by diffuse interstitial fibrosis glomerular changes, typically membranous and sclerotic in nature, as well as intimal fibrosis of the blood vessels with tubular atrophy and loss of tubular structures. (05 Mar 2000) |
| chronic rejection | A transplant rejection occurring after a few or many months, mainly from persisting serum antibody action. (05 Mar 2000) |
| primary rejection | A rejection occurring more than seven days after transplantation, mainly from a cellular immune response. (05 Mar 2000) |
| second set rejection | An accelerated rejection of a transplant that occurs when an individual has been previously sensitised to the graft. (05 Mar 2000) |
| hyperacute rejection | A rejection that usually develops in less than one hour from the implantation of a vascular graft, a form of antibody-mediated, usually irreversible damage to a transplanted organ, particularly the kidney, manifested predominantly by diffuse thrombotic lesions, usually confined to the organ itself and only rarely disseminated, for skin allograft rejection of this type, see white graft. (05 Mar 2000) |
| first-set rejection | Allograft transplantation between two organisms not previously sensitised to the graft tissue. Necrosis of the graft usually occurs within 10 days of transplantation. (05 Mar 2000) |