<unk> s are complex particles composed of a water-repelling core of mainly lipids as non-polar cholesterol esters (CEs) and triglycerides (TGs) surrounded by an amphipathic phospholipid monolayer that includes unesterified free cholesterol (FC) and proteins known as apolipoproteins or aproteins.
Apolipoproteins provide a framework for<unk>  assembly; determine the metabolic fate of the<unk>  by activating or inhibiting key enzymes; and finally act as ligands for receptor molecules.<unk> s are classified into five classes, defined by their respective density on electrophoresis as Chylomicrons, Very Low Density<unk> s (VLDL), Intermediate Density<unk> s (IDL), Low Density<unk>  (LDL) and High Density<unk> s (HDL).
Lipoprotein
Apolipoprotein
Cholesterol
Albumin
Hemoglobin
Lipase
Diglyceride
Amylase