The accumulation of calcified material in cardiovascular tissue is thought ... Using nano-analytical electron microscopy techniques, we examined valves, aortae and coronary arteries from patients ...

This scanning electron micrograph of a blood clot -- taken from the coronary artery of somebody who had a heart attack -- might be scary if it weren't so cool. Look closely: The brown mesh is a ...

This is a colorized scanning electron micrograph of a coronary artery thrombus taken from a patient who had a heart attack. Fibrin fibers are brown; platelet aggregates are gray; red blood cells ...