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    Illustration of female silhouette with highlighted lungs. — Stock Photo
    Illustration of female silhouette with highlighted lungs.
    Vascular system of human head, computer illustration. — Stock Photo
    Vascular system of human head, computer illustration.
    Female abdominal vascular system, computer illustration. — Stock Photo
    Female abdominal vascular system, computer illustration.
    Cardiovascular system in normal male body, computer illustration. — Stock Photo
    Cardiovascular system in normal male body, computer illustration.
    Orange colored lungs in female body silhouette, computer illustration. — Stock Photo
    Orange colored lungs in female body silhouette, computer illustration.
    Digital illustration of transparent elderly man body with visible orange-colored lung. — Stock Photo
    Digital illustration of transparent elderly man body with visible orange-colored lung.
    3d rendered illustration of colored female lungs in body silhouette. — Stock Photo
    3d rendered illustration of colored female lungs in body silhouette.
    Illustration of female silhouette with painful heart. — Stock Photo
    Illustration of female silhouette with painful heart.
    Asthmatic boy using inhaler, close-up. — Stock Photo
    Asthmatic boy using inhaler, close-up.
    Vascular system in normal female body, digital illustration — Stock Photo
    Vascular system in normal female body, digital illustration
    Illustration of bronchi in male body silhouette on black background. — Stock Photo
    Illustration of bronchi in male body silhouette on black background.
    Pneumonia inflammatory condition of lungs, digital illustration. — Stock Photo
    Pneumonia inflammatory condition of lungs, digital illustration.
    Medical illustration of female circulatory system with heart and arteries — Stock Photo
    Medical illustration of female circulatory system with heart and arteries
    Pneumonia caused by bacteria Moraxella catarrhalis, digital illustration. — Stock Photo
    Pneumonia caused by bacteria Moraxella catarrhalis, digital illustration.
    Lobar pneumonia in stage of red hepatisation, digital illustration and light micrograph. — Stock Photo
    Lobar pneumonia in stage of red hepatisation, digital illustration and light micrograph.
    Female body with visible heart and cardiovascular system, digital illustration — Stock Photo
    Female body with visible heart and cardiovascular system, digital illustration
    Human heart, computer illustration — Stock Photo
    Human heart, computer illustration
    Human heart model on white background, computer illustration. — Stock Photo
    Human heart model on white background, computer illustration.
    Illustration of transparent blue silhouette of male body with colored bronchi. — Stock Photo
    Illustration of transparent blue silhouette of male body with colored bronchi.
    Human heart, computer illustration. — Stock Photo
    Human heart, computer illustration.
    Illustration of blue human heart on black background. — Stock Photo
    Illustration of blue human heart on black background.
    Conceptual illustration of coronavirus particles entering human lungs. — Stock Photo
    Conceptual illustration of coronavirus particles entering human lungs.
    Normal human alveoli — Stock Photo
    Normal human alveoli
    Illustration of senior woman silhouette showing heart on black background. — Stock Photo
    Illustration of senior woman silhouette showing heart on black background.
    Illustration of female silhouette with highlighted lung cancer. — Stock Photo
    Illustration of female silhouette with highlighted lung cancer.
    Realistic human heart and blood vessels on black background, digital illustration. — Stock Photo
    Realistic human heart and blood vessels on black background, digital illustration.
    Male anatomy showing vascular system, computer illustration. — Stock Photo
    Male anatomy showing vascular system, computer illustration.
    Senior woman using spirometer, measuring lung capacity and peak expiratory force. — Stock Photo
    Senior woman using spirometer, measuring lung capacity and peak expiratory force.
    Computer illustration of co-infection with two major respiratory pathogenic bacteria, Mycobacterium tuberculosis (rod-shaped) and Streptococcus pneumonia (spherical) — Stock Photo
    Computer illustration of co-infection with two major respiratory pathogenic bacteria, Mycobacterium tuberculosis (rod-shaped) and Streptococcus pneumonia (spherical)
    Illustration of transparent blue silhouette of male body with colored heart tumour. — Stock Photo
    Illustration of transparent blue silhouette of male body with colored heart tumour.
    Vascular system in normal female body, digital illustration — Stock Photo
    Vascular system in normal female body, digital illustration
    Illustration of blue silhouette of obese woman with highlighted heart. — Stock Photo
    Illustration of blue silhouette of obese woman with highlighted heart.
    Lung bronchiole. Light micrograph of a section through lung tissue and a bronchiole. Bronchi form branches from the trachea and gradually diminish in diameter with increasing branching into bronchioles within the lung — Stock Photo
    Lung bronchiole. Light micrograph of a section through lung tissue and a bronchiole. Bronchi form branches from the trachea and gradually diminish in diameter with increasing branching into bronchioles within the lung
    Illustration of silhouette of obese man with visible heart. — Stock Photo
    Illustration of silhouette of obese man with visible heart.
    Female silhouette showing heart anatomy, computer illustration. — Stock Photo
    Female silhouette showing heart anatomy, computer illustration.
    Male body silhouette showing heart anatomy, computer illustration. — Stock Photo
    Male body silhouette showing heart anatomy, computer illustration.
    Illustration of female silhouette with highlighted lung cancer. — Stock Photo
    Illustration of female silhouette with highlighted lung cancer.
    Male anatomy showing vascular system, computer illustration. — Stock Photo
    Male anatomy showing vascular system, computer illustration.
    Human heart with colored tricuspid valve, computer illustration. — Stock Photo
    Human heart with colored tricuspid valve, computer illustration.
    Conceptual illustration of coronavirus particles in human lungs. — Stock Photo
    Conceptual illustration of coronavirus particles in human lungs.
    Human body model showing male anatomy and blood vessels, digital illustration. — Stock Photo
    Human body model showing male anatomy and blood vessels, digital illustration.
    Human heart, computer illustration — Stock Photo
    Human heart, computer illustration
    Illustration of senior man silhouette with visible lungs. — Stock Photo
    Illustration of senior man silhouette with visible lungs.
    Human heart model on blue background, computer illustration. — Stock Photo
    Human heart model on blue background, computer illustration.
    Lobar pneumonia in stage of congestion and consolidation, digital illustration and light micrograph. — Stock Photo
    Lobar pneumonia in stage of congestion and consolidation, digital illustration and light micrograph.
    Vascular system of female upper body, computer illustration. — Stock Photo
    Vascular system of female upper body, computer illustration.
    Human bronchi and heart, illustration — Stock Photo
    Human bronchi and heart, illustration
    Illustration of visible colored lungs in transparent human body silhouette. — Stock Photo
    Illustration of visible colored lungs in transparent human body silhouette.
    Female anatomy showing heart in transparent body silhouette, computer illustration. — Stock Photo
    Female anatomy showing heart in transparent body silhouette, computer illustration.
    Highlighted cavern in lung with well-formed fibrous layer, digital artwork. — Stock Photo
    Highlighted cavern in lung with well-formed fibrous layer, digital artwork.
    Coloured X-ray showing cancer in the left lung of a 55-year-old patient. — Stock Photo
    Coloured X-ray showing cancer in the left lung of a 55-year-old patient.
    Illustration of senior man silhouette with visible lung cancer. — Stock Photo
    Illustration of senior man silhouette with visible lung cancer.
    Male body silhouette showing heart anatomy, computer illustration. — Stock Photo
    Male body silhouette showing heart anatomy, computer illustration.
    Lung bronchiole. Light micrograph of a section through lung tissue and a bronchiole. Bronchi form branches from the trachea and gradually diminish in diameter with increasing branching into bronchioles within the lung — Stock Photo
    Lung bronchiole. Light micrograph of a section through lung tissue and a bronchiole. Bronchi form branches from the trachea and gradually diminish in diameter with increasing branching into bronchioles within the lung
    Coloured chest X-ray showing aspiration (dark areas) in the lungs of a 76-year-old female patient with an extensive brain haemorrhage. — Stock Photo
    Coloured chest X-ray showing aspiration (dark areas) in the lungs of a 76-year-old female patient with an extensive brain haemorrhage.
    Orange colored lungs in male body silhouette, computer illustration. — Stock Photo
    Orange colored lungs in male body silhouette, computer illustration.
    Digital illustration of senior man anatomy showing lungs. — Stock Photo
    Digital illustration of senior man anatomy showing lungs.
    Male body with visible vascular system, computer illustration. — Stock Photo
    Male body with visible vascular system, computer illustration.
    Grey human heart model on white background, computer illustration. — Stock Photo
    Grey human heart model on white background, computer illustration.
    Vascular system of human head, computer illustration. — Stock Photo
    Vascular system of human head, computer illustration.