mature lymphocyte on red blood cells background

anemia antibody antigen artery background basophil biology blood cell cells chemotherapy circulatory closeup disease erythrocyte healthy hematological hematology histology histopathology human immune immunity immunology isolated leukocyte lymphocyte lymphocytes macrophage magnification malignant medical medicine microbiology microscope microscopic monocyte morphologic morphology neutrophil oncology pathology science scientific structure system thrombocytes white