subfractionation of this density class by combined sodium phosphotungstate precipitation , ultracentrifugation , and column chromatography on hydroxyapatite and agarose gel yielded essentially three fractions : ( 1 ) lipoprotein-x , ( 2 ) a triglyceride-rich lipoprotein for which we propose the term lipoprotein-y and ( 3 ) an abnormal lipoprotein , lipoprotein-b .
C0065058
a
C0023820
lipoprotein