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Medical Term:

density gradient centrifugation

 

Definition: ultracentrifugation 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

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