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Dextran |
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dextran [′dek ‚stran]
(biochemistry) Any of the several polysaccharides, (C5H10O5)n, that yield glucose units on hydrolysis. Dextran (C6H10O5)n, a polysaccharide of bacterial origin, a polymer of glucose. The molecular weight can be as high as 10,000,000. In the linear part of the dextran molecule the glucose residues are joined by bonds between the first and sixth carbon atoms; branching is due to bonds between the first and fourth, first and third, and first and second atoms. Dextran is obtained by growing microorganisms of the genus Leuconostoc in an artificial culture medium. Dextran, in the form of a partially hydrolyzed solution with not less than 90 percent 1.6 linkages and a molecular weight of about 60,000 is used clinically as a blood plasma substitute. The preparation provides for a normal osmotic pressure corresponding to that of blood. Modified dextran, so-called Sephadex, is used in chromatography. Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content. |
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No references found | The first reagent contains a-cyclodextrin and dextran sulfate to stabilize LDL-C, VLDL, and chylomicrons. In addition, essential oil extracts from the three Eucalyptus species produced antiinflammatory effects, as demonstrated by inhibition of rat paw edema induced by carrageenan and dextran, neutrophil migration into rat peritoneal cavities induced by carrageenan, and vascular permeability induced by carrageenan and histamine. However, it is unable to ascertain the site of the leak; to do so, iodine 131 polyvinylpyrrolidine, iodine 125 polyvinylpyrrolidone, chromium 51-labelled albumin, chromium 51 chromic chloride, iodine 125 albumin, indium 111 chloride, indium-transferring Tc-99m diethylenetriaminepenta-acetic acid HSA, Tc-99m dextran, and Tc-99m human immunoglobulin have been used with success. |
Dextran |
Dexterous End Effector Dexterous Robotics System dexterously dexterously dexterousness dexterousness dexters dexters dexters dextr(o)- dextr- dextr- Dextra cardia Dextra cardia Dextra cardia dextrad dextrad dextrad writing dextral dextral dextral drag fold Dextral fault dextral fold Dextral shell dextrality dextrality dextrally dextrally dextrals dextrals Dextran dextran 40dextran 40 dextran 40 Dextran and Air dextran fermentation dextran preparation dextran sulfate dextran sulfate dextran sulfate Dextran Sulfate and CaCl2 Dextran-Induced Anaphylactoid Reaction dextranase dextranase Dextranomer Dextrans Dextrans Dextrans dextrase dextraural Dextrer dextriferron dextrin dextrin dextrin Dextrin 2-Sulfate dextrin 6-alpha-glucosidase dextrin dextranase dextrin-1,6-glucosidase dextrinase dextrine | |||||||
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