| tissue preservation | The process by which a tissue or aggregate of cells is kept alive outside of the organism from which it was derived (i.e., to keep from decay by means of a chemical agent, cooling, or a fluid substitute that mimics the natural state within the organism). (12 Dec 1998) |
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| tissue procollagenase | <enzyme> Precursor of tissue collagenase; do not confuse with procollagenase, which is the precursor of clostridiopeptidase a Registry number: EC 3.4.24.- Synonym: promatrixmetalloproteinase-1, prommp-1, pro-matrix metalloproteinase-1 (26 Jun 1999) |
| tissue registration | In dentistry, the accurate registration of the shape of tissues under any condition by means of a suitable material, an impression. (05 Mar 2000) |
| tissue respiration | The interchange of gases between the blood and the tissues. Synonym: internal respiration. (05 Mar 2000) |
| tissue-specific antigen | A heterogenetic antigen with organ specificity; e.g., in addition to species-specific antigen, kidney of one species contains antigen that is identical to that in kidney of other species. Synonym: tissue-specific antigen. (05 Mar 2000) |
| tissue survival | The span of viability of a tissue or an organ. (12 Dec 1998) |
| tissue tension | A theoretical condition of equilibrium or balance between the tissues and cells whereby overaction of any part is restrained by the pull of the mass. (05 Mar 2000) |
| tissue therapy | Historically, tissue transplantation, especially of refrigerated tissue (after filatov). It was theorised that non-specific substances, capable of initiating restorative processes, formed in tissues when refrigerated. This therapy has been discredited and outlawed in western medicine. Cell therapy (after niehans) refers to implantation of tissue by injection. Originally this involved fresh cells but later frozen or lyophilised cells. This therapy has also been banned in most countries but its illicit use is apparently widespread. (12 Dec 1998) |
| tissue thromboplastin inhibition time | A test used to identify lupus anticoagulant; the thromboplastin source used in the prothrombin test is diluted to increase sensitivity to inhibitors. (05 Mar 2000) |
| tissue transplantation | Transference of tissue within an individual, between individuals of the same species, or between individuals of different species. (12 Dec 1998) |
| tissue-trimming | The shaping of an impression material by the manipulation or action of the tissues adjacent to the borders of an impression. Synonym: muscle-trimming, tissue molding, tissue-trimming. (05 Mar 2000) |
| tissue typing | <procedure> The process of determining the allelic types of the antigens of the major histocompatibility complex (MHC) that determine whether a tissue graft will be accepted or rejected. at present carried out either by use of polyclonal or monoclonal antibodies against MHC antigens or less usually by tests of MHC restricted cell function or skin grafting (the latter not in humans). (18 Nov 1997) |
| tissue valve | A prosthetic cardiac valve derived from the pig heart, which is preserved and sterilised with glutaraldehyde, and permanently sutured to a shape-retaining artificial strut; in appropriate sizes, it can replace any natural heart valve. Synonym: porcine valve. (05 Mar 2000) |
| tissue weighting factor | In radiation protection, a factor weighting the equivalent dose in a particular tissue or organ in terms of its relative contribution to the total deleterious effects resulting from uniform irradiation of the whole body. See: effective dose. (05 Mar 2000) |
| epithelial tissue | See: epithelium. (05 Mar 2000) |