structure of low-density lipoprotein ldl. bad cholesterol

100 anatomy apo apolipoprotein apoliprotein artery atherosclerosis attack bad biology cardiovascular cell cholesterol density diet disease ester fat fatty formation good hdl health healthy high human illustration ldl lipid lipids lipoprotein lipoproteins low medical medicine phospholipids plaque problem protein stroke structure triglyceride triglycerides unesterified vector