| leukosulphakinin | <protein> Cockroach peptide hormones, that affect gut motility. Related to gastrin. (18 Nov 1997) |
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| leukotactic | Pertaining to, characterised by, or causing leukocytotaxia. Synonym: leukocytactic, leukotactic. (05 Mar 2000) |
| leukotaxia | 1. The active ameboid movement of leukocytes, especially the neutrophilic granulocytes, either toward (positive leukocytotaxia) or away from (negative leukocytotaxia) certain microorganisms as well as various substances frequently formed in inflamed tissue. 2. The property of attracting or repelling leukocytes. Synonym: leukocytaxia, leukocytaxis, leukotaxia, leukotaxis. Origin: Leukocyte + G. Taxis, arrangement (05 Mar 2000) |
| leukotaxine | A cell-free nitrogenous material prepared from injured, acutely degenerating tissue and from inflammatory exudates. (05 Mar 2000) |
| leukotaxis | 1. The active ameboid movement of leukocytes, especially the neutrophilic granulocytes, either toward (positive leukocytotaxia) or away from (negative leukocytotaxia) certain microorganisms as well as various substances frequently formed in inflamed tissue. 2. The property of attracting or repelling leukocytes. Synonym: leukocytaxia, leukocytaxis, leukotaxia, leukotaxis. Origin: Leukocyte + G. Taxis, arrangement (05 Mar 2000) |
| leukotic | Pertaining to, characterised by, or manifesting leukosis. (05 Mar 2000) |
| leukotome | An instrument for performing leukotomy. (05 Mar 2000) |
| leukotomy | Incision into the white matter of the frontal lobe of the brain. Origin: Leuko-+ G. Tome, a cutting (05 Mar 2000) |
| leukotoxin | Any substance that causes degeneration and necrosis of leukocytes, including leukolysin and leukocidin. Synonym: leukotoxin. Origin: Leukocyte + G. Toxikon, poison (05 Mar 2000) |
| leukotrichia | Whiteness of the hair. Origin: Leuko-+ G. Thrix, hair (05 Mar 2000) |
| leukotrichia annularis | A rare condition in which the hair shows alternate pigmented and bright segments, the latter due to air cavities within the cortex. Synonym: leukotrichia annularis, pili annulati, thrix annulata, trichonosus versicolor. (05 Mar 2000) |
| leukotrichous | Having white hair. (05 Mar 2000) |
| leukotriene | Any of a group of hormonesderived from arachidonate (arachidonic acid).They are thought to mediate the allergic response that causes lungconstriction and muscle contraction in asthma. (09 Oct 1997) |
| leukotriene a4 | (2s-(2 alpha,3 beta(1e,3e,5z,8z)))-3-(1,3,5,8-tetradecatetraenyl)oxiranebutanoic acid. An unstable allylic epoxide, formed from the immediate precursor 5-hpete via the stereospecific removal of a proton at c-10 and dehydration. Its biological actions are determined primarily by its metabolites, i.e., leukotriene b4 and cysteinyl-leukotrienes. Alternatively, leukotriene a4 is converted into leukotriene c4 by glutathione-s-transferase or into 5,6-di-hete by the epoxide-hydrolase. (12 Dec 1998) |
| leukotriene A4 hydrolase | <enzyme> Catalyses hydrolysis of leukotriene a4 to leukotriene b4; mw 68,000-70,000 Registry number: EC 3.3.2.- Synonym: leukotriene a4 aminopeptidase (26 Jun 1999) |