Ключевые слова: background, bacteria, blue, color, contaminants, cubes, danger, dangerous, disease, dishes, epidemic, flat, glass, health, hygiene, illness, infection, invisible, lay, light, listeria, made, magnifying, micro, microbe, microbes, microbiology, microorganism, nobody, object, organism, organisms, parasite, petri, salmonella, top, toxins, view, virus, wooden, word,