Ключевые слова: aids, background, bacteria, biology, blood, cell, clinic, close, dangerous, disease, drug, epidemic, experiment, genetic, health, health care, human, illness, illustration, immunodeficiency, infection, influenza, isolated, life, medical, medicine, micro, microbe, microbiology, microcosmic, microscope, microscopic, molecular, molecule, red, render, research, retrovirus, science, scientific, sick, sickness, spread, structure, technology, therapy, virus,