<unk> s are complex particles that have a central hydrophobic core of non-polar lipids, primarily cholesteryl esters and triglycerides. This hydrophobic core is surrounded by a hydrophilic membrane consisting of phospholipids, free cholesterol, and apolipoproteins. Plasma<unk> s are divided into seven classes based on size, lipid composition, and apolipoproteins.
Lipoprotein
Bile acid
Blood protein
Apolipoprotein
Cholesterol
High-density lipoprotein
Plasma-lyte
Hemoglobin