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    Monitoring respiratory illness with digital spirometer. — Stock Photo
    Monitoring respiratory illness with digital spirometer.
    Illustration of silhouette of obese man with visible lungs. — Stock Photo
    Illustration of silhouette of obese man with visible lungs.
    Alveoli structure and blood supply — Stock Photo
    Alveoli structure and blood supply
    Blood clot, computer illustration — Stock Photo
    Blood clot, computer illustration
    Human heart with colored pulmonary trunk, computer illustration. — Stock Photo
    Human heart with colored pulmonary trunk, computer illustration.
    Human alveoli anatomy — Stock Photo
    Human alveoli anatomy
    Male anatomy showing vascular system, computer illustration. — Stock Photo
    Male anatomy showing vascular system, computer illustration.
    Grey human heart model on red background, computer illustration. — Stock Photo
    Grey human heart model on red background, computer illustration.
    Human heart with colored tricuspid valve, computer illustration. — Stock Photo
    Human heart with colored tricuspid valve, computer illustration.
    Digital illustration of senior man anatomy showing heart. — Stock Photo
    Digital illustration of senior man anatomy showing heart.
    Transparent male silhouette with visible bronchi, computer illustration. — Stock Photo
    Transparent male silhouette with visible bronchi, computer illustration.
    Illustration of bypass in human heart. — Stock Photo
    Illustration of bypass in human heart.
    Illustration of heart in male body silhouette on black background. — Stock Photo
    Illustration of heart in male body silhouette on black background.
    Illustration of silhouette of obese man with visible lungs. — Stock Photo
    Illustration of silhouette of obese man with visible lungs.
    Illustration of silhouette of obese man with visible lungs. — Stock Photo
    Illustration of silhouette of obese man with visible lungs.
    Healthy heart anatomy — Stock Photo
    Healthy heart anatomy
    Vascular system in normal female body, digital illustration — Stock Photo
    Vascular system in normal female body, digital illustration
    Orange colored lungs in male body silhouette, computer illustration. — Stock Photo
    Orange colored lungs in male body silhouette, computer illustration.
    3d rendered illustration of blue silhouette of man with inflamed lungs. — Stock Photo
    3d rendered illustration of blue silhouette of man with inflamed lungs.
    Healthy female vascular system, computer illustration — Stock Photo
    Healthy female vascular system, computer illustration
    Cardiovascular system in male body, computer illustration. — Stock Photo
    Cardiovascular system in male body, computer illustration.
    Digital illustration of senior man anatomy showing lungs. — Stock Photo
    Digital illustration of senior man anatomy showing lungs.
    Lungs cancer, digital illustration showing malignant tumour in lung. — Stock Photo
    Lungs cancer, digital illustration showing malignant tumour in lung.
    Illustration of silhouette of obese man with highlighted lung tumor. — Stock Photo
    Illustration of silhouette of obese man with highlighted lung tumor.
    3d rendered illustration of colored female lungs in body silhouette. — Stock Photo
    3d rendered illustration of colored female lungs in body silhouette.
    Female doctor teaching senior patient how to use inhaler in doctors office — Stock Photo
    Female doctor teaching senior patient how to use inhaler in doctors office
    Vascular system of female upper body, computer illustration. — Stock Photo
    Vascular system of female upper body, computer illustration.
    3d rendered illustration of highlighted female lung. — Stock Photo
    3d rendered illustration of highlighted female lung.
    Male body with visible vascular system, computer illustration. — Stock Photo
    Male body with visible vascular system, computer illustration.
    Male body with visible vascular system, computer illustration. — Stock Photo
    Male body with visible vascular system, computer illustration.
    Illustration of human heart and lungs on white background. — Stock Photo
    Illustration of human heart and lungs on white background.
    Illustration of heart in male body silhouette on white background. — Stock Photo
    Illustration of heart in male body silhouette on white background.
    Female anatomy showing vascular system, digital illustration. — Stock Photo
    Female anatomy showing vascular system, digital illustration.
    Illustration of female silhouette with highlighted trachea. — Stock Photo
    Illustration of female silhouette with highlighted trachea.
    Illustration of silhouette of obese man with visible heart. — Stock Photo
    Illustration of silhouette of obese man with visible heart.
    Realistic human heart and blood vessels on black background, digital illustration. — Stock Photo
    Realistic human heart and blood vessels on black background, digital illustration.
    Realistic human heart model on black background, computer illustration. — Stock Photo
    Realistic human heart model on black background, computer illustration.
    Female anatomy showing heart in transparent body silhouette, computer illustration. — Stock Photo
    Female anatomy showing heart in transparent body silhouette, computer illustration.
    Illustration of lungs in male body silhouette. — Stock Photo
    Illustration of lungs in male body silhouette.
    Coloured computed tomography (CT) scan of a section through the chest of a 76-year-old male patient with a malignant (cancerous) tumour (bright, right) of the bronchus. — Stock Photo
    Coloured computed tomography (CT) scan of a section through the chest of a 76-year-old male patient with a malignant (cancerous) tumour (bright, right) of the bronchus.
    Female abdominal vascular system, computer illustration. — Stock Photo
    Female abdominal vascular system, computer illustration.
    Monitoring respiratory illness with digital spirometer. — Stock Photo
    Monitoring respiratory illness with digital spirometer.
    Digital illustration of senior man anatomy showing lungs. — Stock Photo
    Digital illustration of senior man anatomy showing lungs.
    Male body silhouette showing heart anatomy, computer illustration. — Stock Photo
    Male body silhouette showing heart anatomy, computer illustration.
    Fibrous-cavernous pulmonary tuberculosis cavity in right lung with well-formed fibrous layer. — Stock Photo
    Fibrous-cavernous pulmonary tuberculosis cavity in right lung with well-formed fibrous layer.
    Illustration of lungs in male body silhouette on white background. — Stock Photo
    Illustration of lungs in male body silhouette on white background.
    Medical illustration of female body with digestive and circulatory systems — Stock Photo
    Medical illustration of female body with digestive and circulatory systems
    Male anatomy showing vascular system, computer illustration. — Stock Photo
    Male anatomy showing vascular system, computer illustration.
    Illustration of male office worker vascular system. — Stock Photo
    Illustration of male office worker vascular system.
    Digital illustration of senior man anatomy showing lungs. — Stock Photo
    Digital illustration of senior man anatomy showing lungs.
    Digital illustration of senior man anatomy showing heart. — Stock Photo
    Digital illustration of senior man anatomy showing heart.
    Illustration of senior man silhouette with visible lungs. — Stock Photo
    Illustration of senior man silhouette with visible lungs.
    Lobar pneumonia in stage of red hepatisation, conceptual digital illustration. — Stock Photo
    Lobar pneumonia in stage of red hepatisation, conceptual digital illustration.
    Abstract male silhouette with lung cancer, digital illustration. — Stock Photo
    Abstract male silhouette with lung cancer, digital illustration.
    Diseased lungs in transparent male body on white background, computer illustration. — Stock Photo
    Diseased lungs in transparent male body on white background, computer illustration.
    Female body with visible heart and cardiovascular system, digital illustration. — Stock Photo
    Female body with visible heart and cardiovascular system, digital illustration.
    3d rendered illustration of lung and bronchi on white background. — Stock Photo
    3d rendered illustration of lung and bronchi on white background.
    Digital illustration of senior man anatomy showing lungs. — Stock Photo
    Digital illustration of senior man anatomy showing lungs.
    3d rendered illustration of biker heart on black background. — Stock Photo
    3d rendered illustration of biker heart on black background.
    Pneumonia inflammatory condition of lungs, digital illustration. — Stock Photo
    Pneumonia inflammatory condition of lungs, digital illustration.