Ключевые слова: abstract, background, bacterium, biology, body, cell, closeup, cocci, design, digestive, disease, education, epidemic, fever, flu, germs, health, human, illness, illustration, infection, inflammatory, isolated, life, macro, medicine, microbe, microbiology, microorganism, microscopic, mold, organism, pathology, research, respiratory, science, sickness, single, spherical, staphylococci, texture, toxin, virus,