Ключевые слова: art, bacteria, bio, biohazard, biologic, biological, biology, black, button, caution, chemical, circle, color, colorful, contour, danger, dangerous, environment, epidemic, experiment, flat, forbidden, green, hazard, icon, illustration, isolated, lab, laboratory, line, linear, lineart, outline, privacy, protection, research, restricted, risk, safety, science, security, shield, sign, symbol, toxic, virus, warn, waste, weapon,