SPENCER SUTTON / SCIENCE PHOTO LIBRARY SPENCER SUTTON / SCIENCE PHOTO LIBRARY
Illustration of the structure of a low-density lipoprotein (LDL) particle, a form of cholesterol found in the blood. Chemically mainly made up of lipids, this complex structure includes carrier proteins, phospholipids, and free colesterol molecules. Cardio-vascular research shows that high levels of LDL particles in the blood can lead to an increased risk of atherosclerosis.
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