Alveoli anatomy- tiny air spaces in the lungs through which exchanges oxygen and carbon dioxide. Abstract grey background premium vector by megija

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balls white background graphic illustration design human abstract health healthy blood medicine breathing respiratory medical care breath lines body grey drawing exchange science oxygen branches system organ parts gas anatomy normal diagram lungs tract artery duct vessels respiration anatomical bronchi capillaries pulmonary alveoli parenchyma alveolus bronchopulmonary

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