IL-10 is a small protein with a big part in preventing pulmonary fibrosis

For a long time, physicians and scientists believed our lungs were sterile (germ-free). But modern science indicates otherwise. Now we know they contain allergens, bacteria or viruses we inhale, such as influenza or SARS-COV-2, the virus that causes COVID-19. When those contaminants combine with inflammation, it can lead to chronic lung disease.

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