Ключевые слова: anti, antibacterial, bacillus, background, bacteria, bacterial, bacterium, biology, blue, circle, circular, color, colored, concept, contaminants, dark, dust, flora, germ, gut, harmful, healthy, icon, illustration, line, linear, logo, medical, medicine, microbiota, microscopic, modern, nature, organism, probiotic, risk, round, safety, science, shape, sign, small, spread, style, symbol, template, test, thin, virus,