| S-T | [segment] in electrocardiography, the portion of the segment between the end of the S wave and the beginning of the T wave; sickle-cell thalassemia |
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| S-TK | Serum thymidine kinase |
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| S-Tn | Sialosyl-Tn |
| S-T segment | That part of the electrocardiographic tracing immediately following the QRS complex and merging into the T wave. (05 Mar 2000) |
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| s-triazine hydrolase | <enzyme> Dechlorinates deisopropylatrazine (ceat) and deethylatrazine (ciat); mw 54 kD; from rhodococcus corallinus; genbank l16534 Registry number: EC 3.8.1.- Synonym: trza gene product (26 Jun 1999) |
| s-type cholinesterase | <enzyme> An enzyme that breaks down acetylcholine tostop its action. (22 May 1997) |
| S-T interval |
The interval in an electrocardiogram that represents ventricular repolarization. An elevation of the S-T segment may be seen in myocardial infarction, Prinzmetal's angina, and ventricular aneurysms; depression of the S-T segment is
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| S-T segment elevation |
The height of the ST segment of an electrocardiogram relative to a level line that can be drawn between the preceding P-R interval and the subsequent T-P interval. S-T segment elevation in two or more contiguous leads of th
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