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    Asbestos fibres in lung tissue, light micrograph. — Stock Photo
    Asbestos fibres in lung tissue, light micrograph.
    Colored X-ray showing blood vessels in lung. — Stock Photo
    Colored X-ray showing blood vessels in lung.
    Lung tissue, coloured transmission electron micrograph (TEM). — Stock Photo
    Lung tissue, coloured transmission electron micrograph (TEM).
    Pulmonary circulation of human heart and lung — Stock Photo
    Pulmonary circulation of human heart and lung
    False-colour scanning electron micrograph of a section of healthy lung tissue, showing the microscopic air sacs (alveoli) where gas exchange takes place. — Stock Photo
    False-colour scanning electron micrograph of a section of healthy lung tissue, showing the microscopic air sacs (alveoli) where gas exchange takes place.
    Pulmonary circulation of human heart and lung — Stock Photo
    Pulmonary circulation of human heart and lung
    Transparent view of human chest showing the lung — Stock Photo
    Transparent view of human chest showing the lung
    3D rendering of human lungs with respiratory tree and diaphragm — Stock Photo
    3D rendering of human lungs with respiratory tree and diaphragm
    Human thyroid anatomy, computer illustration. — Stock Photo
    Human thyroid anatomy, computer illustration.
    Spring flowers representing human lungs. — Stock Photo
    Spring flowers representing human lungs.
    Three dimensional view of the female respiratory system — Stock Photo
    Three dimensional view of the female respiratory system
    3D rendering of right and left human lungs — Stock Photo
    3D rendering of right and left human lungs
    Human lungs anatomy in cross-section, illustration. — Stock Photo
    Human lungs anatomy in cross-section, illustration.
    Lung tissue, coloured transmission electron micrograph (TEM). — Stock Photo
    Lung tissue, coloured transmission electron micrograph (TEM).
    3D rendering of human lungs on black background — Stock Photo
    3D rendering of human lungs on black background
    Human lungs normal anatomy — Stock Photo
    Human lungs normal anatomy
    Lung cancer pathology — Stock Photo
    Lung cancer pathology
    Healthy and diseased female organs — Stock Photo
    Healthy and diseased female organs
    Normal human alveoli — Stock Photo
    Normal human alveoli
    Secondary carcinoma of the lung — Stock Photo
    Secondary carcinoma of the lung
    Healthy lungs and respiratory system — Stock Photo
    Healthy lungs and respiratory system
    Human alveoli anatomy — Stock Photo
    Human alveoli anatomy
    Human alveoli anatomy — Stock Photo
    Human alveoli anatomy
    Human alveoli anatomy — Stock Photo
    Human alveoli anatomy
    Internal organs and cardiovascular system — Stock Photo
    Internal organs and cardiovascular system
    Upper-body anatomy of adult male — Stock Photo
    Upper-body anatomy of adult male
    Normal human alveoli anatomy — Stock Photo
    Normal human alveoli anatomy
    Human torso and respiratory system — Stock Photo
    Human torso and respiratory system
    Schematic human anatomy — Stock Photo
    Schematic human anatomy
    Normal human alveoli anatomy — Stock Photo
    Normal human alveoli anatomy
    Human alveoli anatomy — Stock Photo
    Human alveoli anatomy
    Human torso and respiratory system — Stock Photo
    Human torso and respiratory system
    Alveolar macrophage phagocytosis of E. coli — Stock Photo
    Alveolar macrophage phagocytosis of E. coli
    Healthy and Infected bronchus — Stock Photo
    Healthy and Infected bronchus
    Normal human alveoli — Stock Photo
    Normal human alveoli
    Alveolar macrophage phagocytosis of E. coli — Stock Photo
    Alveolar macrophage phagocytosis of E. coli
    Adult male structural anatomy — Stock Photo
    Adult male structural anatomy
    Skeletal system and brain structure — Stock Photo
    Skeletal system and brain structure
    Alveoli structure and blood supply — Stock Photo
    Alveoli structure and blood supply
    Female anatomy with emphasis on lungs — Stock Photo
    Female anatomy with emphasis on lungs
    Circulatory system and blood supply — Stock Photo
    Circulatory system and blood supply
    Healthy and Infected bronchus — Stock Photo
    Healthy and Infected bronchus
    Normal human alveoli anatomy — Stock Photo
    Normal human alveoli anatomy
    Structure of alveoli of human lungs — Stock Photo
    Structure of alveoli of human lungs
    Healthy and Infected bronchus — Stock Photo
    Healthy and Infected bronchus
    Normal human alveoli anatomy — Stock Photo
    Normal human alveoli anatomy
    Alveoli structure and blood supply — Stock Photo
    Alveoli structure and blood supply
    Human lungs in rib cage — Stock Photo
    Human lungs in rib cage
    Human upper body anatomy — Stock Photo
    Human upper body anatomy
    Tumour filling an alveolus of the human lung — Stock Photo
    Tumour filling an alveolus of the human lung
    Adult male anatomy — Stock Photo
    Adult male anatomy
    Alveolar macrophage phagocytosis of E. coli — Stock Photo
    Alveolar macrophage phagocytosis of E. coli
    Infected bronchus with mucus — Stock Photo
    Infected bronchus with mucus
    Lungs and respiratory system — Stock Photo
    Lungs and respiratory system
    Structure of alveoli of human lungs — Stock Photo
    Structure of alveoli of human lungs
    View of Human anatomy — Stock Photo
    View of Human anatomy
    Structure of alveoli of human lungs — Stock Photo
    Structure of alveoli of human lungs
    Lungs and respiratory system — Stock Photo
    Lungs and respiratory system
    Head anatomy revealing normal brain — Stock Photo
    Head anatomy revealing normal brain
    Internal organs and cardiovascular system — Stock Photo
    Internal organs and cardiovascular system