blood vessel in lungs PNG, stickers, cliparts, transparent illustration & graphics

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human lungs illustration, respiratory system anatomy, carina of trachea, blood vessel in lungs, pulmonary function, respiratory tract diagram, bronchial tree structure
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human intestine illustration, Pulmonary alveolus Anatomy, Alveolar venous blood vessels, Bronchiole, respiratory system diagram, pulmonary circulation, lung vascular structure