Ключевые слова: anatomy, anemia, artery, background, biology, blood, bloodstream, body, cancer, capillary, cardiovascular, cell, circulatory, closeup, clot, disease, erythrocyte, flow, genetic, health, healthy, hematology, hemoglobin, human, illustration, infection, life, macro, medical, medicine, microbiology, microscope, microscopic, molecule, organic, plasma, platelets, red, research, science, scientific, sick, sickness, stream, system, vascular, vein, vessel,