normal level of cholesterol crystals and red blood cells flowing in artery 3d

arteria arteries artery atherosclerosis blocked blood cardiac cardiology cell cells cholesterol circulation clogged colesterol coronary dangerous diet failure fat flow flowing food heart hypercholesterolemia illustration inactive levels magnification medical medicine microbiology micrograph obesity occlusion overweight passive photos plaque pressure red saturated science scientific sedentary stroke thinner vascular vein vessel