енергия Correlate Да скачат air sacs in lungs алгебричен зъболекарски свалям
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Alveoli: Structure, Function, and Disorders of the Lungs
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Because air is trapped in these air sacs, it is difficult for lungs with COPD to deflate like normal l… in 2020 | Copd, Chronic obstructive pulmonary disease, Copd symptoms
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