| 释义 |
DictionarySeecentrifugationdensity gradient centrifugation
density gradient centrifugation[′den·səd·ē ¦grād·ē·ənt sen‚trif·ə′gā·shən] (analytical chemistry) Separation of particles according to density by employing a gradient of varying densities; at equilibrium each particle settles in the gradient at a point equal to its density. density gradient centrifugation
den·si·ty gra·di·ent cen·trif·u·ga·tionultracentrifugation of substances in concentrated solutions of cesium salts or of sucrose; at equilibrium, the medium exhibits a concentration (hence density) gradient increasing in the direction of centrifugal force and the substances of interest collect in layers at the levels of their densities. See: isopycnic zone. Synonym(s): band centrifugation, zone centrifugation |