hemoglobin and white blood cells lymphocytes in blood plasma

anatomy anemia artery background basophil biology blood bloodstream body cell disease eosinophil erythrocyte flow flowing healthy heart hemoglobin human icon illustration immune inflammation isolated lymphocyte lymphocytes macrophage medical medicine microbiology molecule monocyte monocytes neutrophil oxygen plasma platelets red science stream thrombocyte thrombocytes type vascular vector vein virus white