red blood cells with white blood cells that is immune. scientific and medical microbiological concept. enrichment with

abstract anemia artery background biology blood body cancer care cell clinic clot corpuscle disease erythrocyte flow genetic health healthy hemocyte hemoglobin human infection leukocyte lymphocyte macro medical medicine microbiology microscope microscopic neutrophil organic red science scientific sick sickness sphere thrombocyte thrombosis vascular vein virus