Biology, 24.07.2020 20:01 joseflores10205
Bronchitis is an infection of the bronchi. When it occurs, the bronchi accumulate mucus and become inflamed, which restricts air flow. What are some of the respiratory defenses that protect the bronchi from infections
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Bronchitis is an infection of the bronchi. When it occurs, the bronchi accumulate mucus and become i...
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