blood cells flowing

anatomy artery biology blood body cancerous cardiovascular cell cells clot coronary corpuscle disease erythrocyte erythrocytes flow health healthcare healthy hematological hemocytes hemodynamics hemoglobin human illness illustration leucocytes leukaemia leukocyte leukocytes lymphoblastic lymphocyte medical medicine microbiology microscopic oxygen platelet platelets rbc red science stroke thrombocyte vector vein wbc white