Ключевые слова: aids, anatomy, animal blood, antibody, artery, backgrounds, bacterium, biology, blood, blood cell, blood flow, blood vessel, bloodstream, cancer, cancer cell, cell, cholesterol, closeup, fat, flowing, healthcare and medicine, hemoglobin, highscale magnification, human artery, human cell, human internal organ, human vein, illness, illustration, immunology, magnification, medical research, medicine, microbiology, microorganism, microscope, organic, oxygen, research, science, small, tumor, vein, virus, white blood cell,