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Clinical Chemistry, Vol 32, 992-994, Copyright © 1986 by American Association for Clinical Chemistry
P Weisweiler, C Friedl and P Schwandt
Using "high-performance" anion-exchange chromatography, we isolated and quantified human C apolipoproteins (apo C) from very-low-density lipoproteins (VLDL) in serum. As revealed by isoelectric focusing and double immunodiffusion against monospecific antisera, apo C-I, apo C- II, apo C-III0, apo C-III1, and apo C-III2 were purified to homogeneity. Assay reproducibility (coefficients of variation) ranged between 0.9% and 4.7%. The relative percentages of apo C subspecies in VLDL from normal and hypertriglyceridemic serum samples agreed with data obtained by alternative methods. This precise technique is suitable for detecting and analyzing abnormalities of C apolipoproteins in VLDL.
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