Countless airways of various sizes form a ramified system like the branches of a tree. But in being directly in touch with the outside world through the air they breathe, they are greatly exposed to bacteria, viruses and other pollutants. If these get into the airways, they may set
Corona – The Breathless Epidemic: How to Keep your Lung Healthy and Strong
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Corona – The Breathless Epidemic: How to Keep your Lung Healthy and Strong
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