Labels:text | screenshot | black and white | black | font | document OCR: re in Lipoproteins are composed of a central cholesterol which the more lipophilic components om the esters and triglycerides, are sequestered face aqueous environment of plasma by a su 01 comprised of unesterified (free) cholest se phospholipids, and apolipoproteins. Th in the components exist in distinct proportion nitting different lipoprotein classes, thereby per ch as their separation by operational means s There is, ultracentrifugation and electrophoresis hin each however, considerable heterogeneity w oproteins lipoprotein class (Fig. 6.3). Several apoli sses, each are found in the different lipoprotein cl as ligands having three major functions: structure for receptors; and as enzyme cofactors.