Ключевые слова: artery, background, basophil, biology, blood, body, cell, cells, disease, elements, eosinophil, granules, granulocyte, health, healthy, heart, hemoglobin, human, immune, infection, isolated, leukocyte, life, lymphocyte, medical, medicine, microbiology, microscope, neutrophil, nucleus, platelets, red, science, scientific, structure, system, vascular, vein, white,