image tag: harmful pathogens, orientation: vertical, image quantity: 4

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bacteria, electron microscope, klebsiella pneumoniae, stained red, pneumonia, bacterium, pathogen
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bacteria, cocci, staphylococci, staphylococcus, pathogens, disease, electron microscopy
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women's, cigarette, drink, nicotine, exposure, harmful, dependent
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age, bacteria, bio, biology, bread, breakfast, bug