ultracentrifugation
ultracentrifugation Centrifugation carried out at high rotor speeds (up to 75 000 rpm) and therefore under high centrifugal forces (up to 750 000 g). Analytical ultracentrifuges are employed to determine the mass and to some extent the shape of molecules; preparative ultracentrifuges are used to separate the components of mixtures on the bases of these parameters.
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ultracentrifugation
Book article from: A Dictionary of Plant Sciences
ultracentrifugation Centrifugation carried out at high rotor speeds (up to 75 000 rpm) and therefore under high centrifugal forces (up to 750 000 g...
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satellite DNA
Book article from: A Dictionary of Zoology
...separates from the bulk of DNA when native DNA is separated according to density in a solution of caesium chloride following ultracentrifugation . The caesium chloride forms a density gradient and the DNA settles out where its density equals that of the solution...
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Cholesterol Test
Encyclopedia entry from: Encyclopedia of Public Health
...include total cholesterol, LDL cholesterol, HDL cholesterol, and triglycerides. Originally, this was done by a lengthy ultracentrifugation of serum or plasma, which created zones of particles with different densities. More recently the process has been automated...
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Separation and Purification of Biomolecules
Book article from: Biology
...purification methods are chromatography, electrophoresis, and ultracentrifugation. Each one relies on certain physicochemical properties...identification, sequencing, or further manipulation. Ultracentrifugation Cells, organelles , or macromolecules in solution exposed...
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VLDL Cholesterol
Encyclopedia entry from: Encyclopedia of Public Health
...the more important LDL cholesterol. Originally, LDL cholesterol was determined by a lengthy, laborious process called ultracentrifugation of serum. A much more rapid test became available based on the following Friedwald equation: Total cholesterol = LDL...
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