Blood medicine red blood cells white blood cells erythrocyte aplastic anemia erythrocyte group monetary columella hematology analyzer bleeding hemostasis abnormal biological blood cell cancer cancerous cells corpuscle corpuscles cytology disease disorder erythrocyte erythrocytes haematology haemoglobin hematological hematology hemoglobin human biology human body immune cell immunity immunology leucocyte leukaemia leukemia leukemic leukocyte leukocytes lymphocyte lymphocytes medical microscopic photos oncology oxygen carrying platelet red red blood cell respiration thrombocyte unhealthy white blood cell red white gray human immune system
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