blood clot or thrombus blocking the red blood cells stream within an artery or a vein 3d rendering . thrombosis,

anatomy artery biology bleeding blood bloodstream capillary cardiovascular cell cells circulation circulatory clot coagulated coagulation corpuscle danger disease erythrocytes fibrin flow health hemostasis illness illustration ischemia macro medical medicine microbiology microscopic myocardial pathology plasma red rendering science scientific stream stroke system thrombosis thrombus vascular vein vessel