JOHN BAVOSI / SCIENCE PHOTO LIBRARY JOHN BAVOSI / SCIENCE PHOTO LIBRARY
High blood cholesterol. Artwork of hypercholester- olaemia or hyperlipidaemia, high levels of the lipid cholesterol in the blood. Low-density lipo- proteins (LDLs, large yellow spheres, centre left) transport cholesterol (tiny yellow spheres inside LDL) around the blood. Cholesterol is a major part of the deposits of atheroma (yellow) that line the walls of the arteries (one at centre right) in atherosclerosis, restricting blood supply. This may lead to a heart attack or stroke. Fat may also be deposited around the edge of the cornea of the eye (lower left) as a whitish ring called an arcus senilis. A blood sample is being taken for analysis through a syringe needle (upper centre).
Model release not required. Property release not required.