handwriting text writing white blood cell. concept meaning leucocytes in charge of protect body from infections blank

anatomy artery basophil biology blood bloodcells body capillaries cell cells circulatory disease eosinophil health healthy hemoglobin huanalysis immune immunity immunotherapy infection laboratory leukemia leukocyte leukocytes life lipids lymphocyte medical medicine microbiology microscope microscopic monocyte neutrophil nucleus organ plasma red science scientific structure system vascular vein white