<Li> Intermediate - density lipoproteins (IDL) are intermediate between VLDL and LDL . They are not usually detectable in the blood when fasting . </Li> <Li> Low - density lipoproteins (LDL) carry 3,000 to 6,000 fat molecules (phospholipids, cholesterol, triglycerides, etc .) around the body . LDL particles are sometimes referred to as "bad" lipoprotein because concentrations, dose related, correlate with atherosclerosis progression . <Ul> <Li> large buoyant LDL (lb LDL) particles </Li> <Li> small dense LDL (sd LDL) particles </Li> <Li> Lipoprotein (a) is a lipoprotein particle of a certain phenotype </Li> </Ul> </Li> <Ul> <Li> large buoyant LDL (lb LDL) particles </Li> <Li> small dense LDL (sd LDL) particles </Li> <Li> Lipoprotein (a) is a lipoprotein particle of a certain phenotype </Li> </Ul> <Li> large buoyant LDL (lb LDL) particles </Li>

Discuss the composition and function of the major circulating lipoproteins