| SLT | Split Liver Transplantation |
|---|---|
| SLT | single lung transplant |
| SLT | smokeless tobacco |
| SLT | specific locus test |
| SLT I | Shiga-like toxin I |
| SLT-EC | Shiga-like toxin-producing Escherichia coli |
| SLVL | Splenic Lymphoma with Villous Lymphocytes |
| SLX | Sialyl Lewis-X |
| slow combustion | See: decay. Spontaneous combustion, the ignition of a mass of material by heat developed within it by the oxidation of the substances composing it without external ignition. (05 Mar 2000) |
|---|---|
| slow fever | A continued fever of long duration. (05 Mar 2000) |
| slow muscle | <physiology> Striated muscle used for long term activity (e.g. Postural support). Depend therefore on oxidative metabolism and have many mitochondria and abundant myoglobin. (18 Nov 1997) |
| slow pyrolysis | Thermal conversion of biomass to fuel by slow heating to less than 450>C in the absence of oxygen. (05 Dec 1998) |
| slow ray | <microscopy> The slower of the two rays created by a crystal or fibre and the one that travels the path of higher refractive index. (05 Aug 1998) |
| slow reacting substance of anaphylaxis | <immunology> Potent bronchoconstrictor and inflammatory agent released by mast cells, an important mediator of allergic bronchial asthma. A mixture of three leukotrienes (LTC4 mainly, LTD4 and LTE4) (18 Nov 1997) |
| slow scan | <microscopy> A system of video scanning in which the time used to read each line has been increased in comparison to standard video. The bandwidth needed to faithfully transmit or record the signal is reduced in inverse ratio to the scanning time. Slow scan allows the video signal to be transmitted over a telephone line, or line scans to be registered on a chart recorder. (19 Jan 1998) |
| slow virus | 1. <virology> Specifically one of the Lentivirinae 2. Any virus causing a disease that has a very slow onset. Diseases such as sub acute spongiform encephalopathy, Aleutian disease of mink, scrapie, kuru and Creutzfeldt Jacob disease may be caused by slow viruses. See: prion. (18 Nov 1997) |
| slow virus disease | A disease that follows a slow, progressive course spanning months to years, frequently involving the central nervous system, and ultimately leading to death, such as visna and maedi of sheep, caused by viruses of the subfamily Lentivirinae (family Retroviridae), and subacute sclerosing panencephalitis, seemingly caused by the measles virus; spongiform encephalopathies including kuru of man, scrapie of sheep, and transmissible encephalopathy of mink may also be classified under slow virus disease but their respective aetiologic agents have not been adequately characterised. (05 Mar 2000) |
| slow virus diseases | Diseases of viral origin, characterised by incubation periods of months to years, insidious onset of clinical manifestations, and protracted clinical course. Though the disease process is protracted, viral multiplication may not be unusually slow. Conventional viruses produce slow virus diseases such as subacute sclerosing panencephalitis, progressive multifocal leukoencephalopathy (leukoencephalopathy, progressive multifocal), and aids. Diseases produced by unconventional agents were originally considered part of this group. They are now called prion diseases. (12 Dec 1998) |
| slow-reacting factor of anaphylaxis | Slow-reacting substance of anaphylaxis (SRS-A), a leukotriene of low molecular weight which is released in anaphylactic shock and produces slower and more prolonged contraction of muscle than does histamine; it is active in the presence of antihistamines (but not epinephrine) and seems not to occur preformed in mast cells, but as a result of an antigen-antibody reaction on the granules. Compare: peptidyl leukotrienes. Synonym: slow-reacting factor of anaphylaxis. (05 Mar 2000) |
| slow-reacting substance | Slow-reacting substance of anaphylaxis (SRS-A), a leukotriene of low molecular weight which is released in anaphylactic shock and produces slower and more prolonged contraction of muscle than does histamine; it is active in the presence of antihistamines (but not epinephrine) and seems not to occur preformed in mast cells, but as a result of an antigen-antibody reaction on the granules. Compare: peptidyl leukotrienes. Synonym: slow-reacting factor of anaphylaxis. (05 Mar 2000) |
| slows | <medicine> Milk sickness. Source: Websters Dictionary (01 Mar 1998) |
| slowworm | <zoology> A lecertilian reptile; the blindworm. Origin: AS. Slawyrm; the first part is probably akin to slean to strike, the reptile being supposed to be very poisonous. See Slay, and Worm. Source: Websters Dictionary (01 Mar 1998) |
| SLS | <biochemistry> Abnormal packing pattern of collagen molecules formed if ATP is added to acidic collagen solutions, in which lateral aggregates of molecules are produced. Each aggregate is 300 nm long and the molecules are all in register. If segment long spacing aggregates are overlapped with a quarter stagger, the 67 nm banding pattern of normal fibrils is reconstituted. Acronym: SLS (18 Nov 1997) |
| slurry |
(slur
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| slug |
(slug) (slug) general term for any of numerous terrestrial gastropods closely related to the snails but having a rudimentary or absent shell; they are divided between the subclasses Euthyneura and Streptoneura. Some are intermediate hosts of parasitic trematodes.
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| sleep |
(sleep) (sl[emacr]p) a period of rest for the body and mind, during which volition and consciousness are in partial or complete abeyance and the bodily functions partially suspended. Sleep has also been described as a behavioral state marked by a characteristic immobile posture and diminished but readily reversible sensitivity to external stimuli. Sleep is divisible into two types: NREM (non
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| Sly syndrome |
(Sly syndrome) (sli) [William S. Sly, American physician, born 1932] see under syndrome.
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| slyke |
(slyke) (sl[imacr]k) a unit of buffer value, named after DD Van Slyke, a pioneer in buffering analysis; abbreviated sl.
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| SL | cut with sweeping strokes |
|---|---|
| SL | beat severely with a whip or rod |
| SL | move or stir about violently |
| SL | a pocket in a garment (usually below the waist) to which access is provided by a vertical or diagonal slit in the outside of the garment |
| SL | having long and narrow ornamental cuts showing an underlying fabric |
| SL | (used of rates or prices) reduced usually sharply |
| SL | wounded by cutting deeply |
| SL | patterned by having color applied with sweeping strokes |
| SL | a fighter who slashes |
| SL | as if striking with slashing blows |
| SL | a region of central Europe rich in deposits of coal and iron ore |
| SL | a thin strip (wood or metal) |