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sedimentation constant

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n.

A unit of time, usually between 1X10-13 and 200X10-13 per second, used in calculating the molecular weight of proteins as a function of their rate of movement during centrifugation.

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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

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