blood cell and cells of the immune system

cell immune system platelet thrombocyte red blood rbcs erythrocyte white leukocyte eosinophil neutrophil basophil lymphocyte macrophage monocyte vector diagram medical medicine microbiology disease biology human immunity infection health research immunology illness pandemic protection defense epidemic vaccination influenza inflammation body microscopic structure fever prevention coronavirus infect cancer resistance pathogen cells system leukocytes: monocyte