abstract red blood cells clot in the of a sphere on white background. scientific and medical concept

anatomy anemia artery background basophils biology blood bloodcell cancer capillary cardiovascular cell cells circulatory clot eosinophils erythrocyte erythrocytes genetic hematology hemocytes hemoglobin human infection isolated life lymphocyte macro medical medicine microbiology microscope microscopic monocytes neutrophils organic plasma platelets red research science scientific thrombocytes thrombosis vascular vein virus