normal and cholesterol-blocked artery. blood clot, thrombus, atherosclerotic plaque. deep vein thrombosis dvt or

blood cholesterol vein vessel artery thrombosis vascular block dvt swelling disease vector anatomy clot deep leg thrombus valve human pain flow red atherosclerosis blocked health venous varicose inside medical symptoms treatment medicine plaque therapy coagulation bloodstream edema problem cell circulation arteriosclerosis healthy normal structure concept platelet cardiologist coronary erythrocyte