Ключевые слова: abstract, airbone, allergens, amoeba, animal, anti, art, bacteria, bacterium, biohazard, biology, cancer, cell, contaminants, design, dirty, dust, duster, ebola, health, hiv, human, icon, illness, illustration, infection, infusorium, life, medical, medicine, micro, microbe, microbiology, microorganism, microscopic, mold, oraganism, pathogen, pictogram, pollen, science, sign, symbol, virus,