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Bacillus Adenovirus, Aerobe, Aerobic Bacteria, Amoeba, Anaerobe, Anaerobic Bacteria, Bacteria, Bacterium, Bug, Coccus, Disease-Producing Microorganism, Echovirus, Enterovirus, Filterable Virus, Fungus, Germ, Gram-Negative Bacteria, Gram-Positive Bacteria, Microbe, Microorganism, Mold, Nonfilterable Virus, Pathogen, Picornavirus, Protozoa, Protozoon, Reovirus, Rhinovirus, Rickettsia, Spirillum, Spirochete, Spore, Staphylococcus, Streptococcus, Trypanosome, Vibrio, Virus