| LFT | latex fixation test; latex flocculation test; left fronto-transverse [fetal position]; liver functio... |
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| LTT | lactose tolerance test; leucine tolerance test; limited treadmill test; lymphocyte transformation te... |
| SAT | saliva alcohol test; satellite; serum antitrypsin; single-agent chemotherapy; slide agglutination te... |
| SRT | sedimentation rate test; simple reaction time; sinus node recovery time; sitting root test; speech r... |
| ST | esotropia; scala tympani; scaphotrapezoid; sclerotherapy; sedimentation time; semitendinosus; sensor... |
| Vi antibody | A form of antibody that agglutinates highly virulent strains of Salmonella typhi, i.e., cells with Vi antigen; such bacteria are not agglutinable with O antiserum until the Vi antigen is destroyed. See: Vi antigen. (05 Mar 2000) |
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| cell-bound antibody | A term used for antibody on the surface of cells that may be bound either through antigen combining sites or other sites such as the Fc region. (05 Mar 2000) |
| CF antibody | Antibody that combines with and sensitises antigen leading to the activation of complement, which may result in cell lysis. Synonym: CF antibody, sensitizing substance. (05 Mar 2000) |
| chimeric antibody | <immunology> An antibody that contains polypeptides from different species. (05 Jan 1998) |
| chimeric/humanised antibody | <immunology> Genetically engineered combination of a human and mouse antibody. Because a monoclonal antibody is always made with mice cells, it causes an immune response when injected into humans. By replacing the constant regions of a mouse antibody with those of a human antibody, an antibody that binds to an antigen like the original monoclonal antibody, but which is recognised by the human immune system like a human protein, can be manufactured. Alternatively, only those amino acids directly involved in antigen binding are transferred from the mouse antibody into the framework of the human antibody, with a similar result. (05 Jan 1998) |
| microsomal antibody | This special serologic test is used to measure thyroid anti-microsomal antibody in the bloodstream. This test can be performed from a simple venipuncture specimen. The anti-microsomal antibody or microsomal antibody test is used to diagnose conditions such as Hashimoto's thyroiditis and other autoimmune disorders. (27 Sep 1997) |
| warm antibody | <haematology, immunology> most IgG antibodies react better at 37쵣 than at lower temperatures, especially against red cell antigens. These are the warm antibodies as contrasted with cold agglutinins, especially IgM, that agglutinate below 28쵣. (18 Nov 1997) |
| Wassermann antibody | Antibody, evoked during syphilitic infections, that combines with cardiolipin in the presence of lecithin and cholesterol; it is distinct from the treponema-immobilizing antibody. (05 Mar 2000) |
| cold antibody | See: cold agglutinin. (05 Mar 2000) |
| monoclonal antibody | <immunology, molecular biology> A substance, usually a protein, which can be synthsised in the laboratory in pure form by a single clone (population) of cells. These antibodies can be made in large quantities and have a specific affinity for certain target molecules called antigens which can be found on the surface of cells and those that are malignant. Monoclonal antibodies are currently being investigated as a possible form of cancer treatment although their benefit has not be fully proven. (16 Dec 1997) |
| complement-fixing antibody | Antibody that combines with and sensitises antigen leading to the activation of complement, which may result in cell lysis. Synonym: CF antibody, sensitizing substance. (05 Mar 2000) |
| complete antibody | An antibody which causes agglutination of erythrocytes when they are suspended either in saline or in a protein medium. (05 Mar 2000) |
| polyclonal antibody | An antibody produced by several clones of B lymphocytes as would be the case in a whole animal. Usually refers to antibodies raised in immunised animals, whereas a monoclonal antibody is the product of a single clone of B lymphocytes, usually maintained in vitro. (18 Nov 1997) |
| cross-reacting antibody | <immunology> Antibody specific for group antigens, i.e., those with identical functional groups, antibody for antigens that have functional groups of closely similar, but not identical, chemical structure. (05 Mar 2000) |
| Prausnitz-Kustner antibody | One of the IgE class of antibody's first demonstrated by Prausnitz and Kustner by passive transfer to the skin. See: homocytotropic antibody. Synonym: atopic reagin. (05 Mar 2000) |