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| navigate by keyword : lungs lung respiratory infection bacteria virus pathogen disease medical health illness pulmonary microorganism microbe contamination airway breathing organ anatomy healthcare science epidemic immunity immune inflammation pneumonia bronchitis viruscell bacterium germ toxic pollution air environment risk protection treatment prevention biology concept illustration green abstract medicine human |
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| Conceptual medical illustration of human lungs surrounded by bacteria, viruses, and microorganisms, representing respiratory infections and pulmonary diseases. Impact of microbes on the respiratory system. |
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