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    Male body silhouette showing heart anatomy, computer illustration. — Stock Photo
    Male body silhouette showing heart anatomy, computer illustration.
    Illustration of human lung and bronchi on white background. — Stock Photo
    Illustration of human lung and bronchi on white background.
    Man holding a heart, computer illustration. — Stock Photo
    Man holding a heart, computer illustration.
    Lobar pneumonia in stage of red hepatisation, conceptual digital illustration. — Stock Photo
    Lobar pneumonia in stage of red hepatisation, conceptual digital illustration.
    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)
    Heart anatomy in male thorax, computer illustration. — Stock Photo
    Heart anatomy in male thorax, computer illustration.
    Male abdominal blood vessels, digital illustration. — Stock Photo
    Male abdominal blood vessels, digital 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
    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.
    Yellow colored bronchi in body of woman, computer illustration. — Stock Photo
    Yellow colored bronchi in body of woman, computer illustration.
    Human heart with colored right ventricle, computer illustration. — Stock Photo
    Human heart with colored right ventricle, computer illustration.
    Illustration of lungs in silhouette of female body. — Stock Photo
    Illustration of lungs in silhouette of female body.
    Mid section illustration of heart in male body silhouette. — Stock Photo
    Mid section illustration of heart in male body silhouette.
    Cardiovascular system and heart in normal male body, computer illustration. — Stock Photo
    Cardiovascular system and heart in normal male body, computer illustration.
    Alternaria fungi on white background, digital illustration. — Stock Photo
    Alternaria fungi on white background, digital illustration.
    Healthy female vascular system, computer illustration — Stock Photo
    Healthy female vascular system, computer illustration
    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.
    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.
    Lobar pneumonia in stage of grey hepatisation or late consolidation, digital illustration and light micrograph. — Stock Photo
    Lobar pneumonia in stage of grey hepatisation or late consolidation, digital illustration and light micrograph.
    Composite image of nasal epithelium and pollen. Coloured Scanning Electron Micrograph (SEM) of the surface of nasal epithelium with inhaled in pollen. — Stock Photo
    Composite image of nasal epithelium and pollen. Coloured Scanning Electron Micrograph (SEM) of the surface of nasal epithelium with inhaled in pollen.
    Conceptual illustration of coronavirus particles entering human lungs. — Stock Photo
    Conceptual illustration of coronavirus particles entering human lungs.
    Human heart with colored right atrium, computer illustration. — Stock Photo
    Human heart with colored right atrium, computer illustration.
    Medical illustration of female breast arteries, veins and lymphatic system — Stock Photo
    Medical illustration of female breast arteries, veins and lymphatic system
    Abstract male silhouette with lung cancer, digital illustration. — Stock Photo
    Abstract male silhouette with lung cancer, digital illustration.
    Human heart anatomy showing valves, cross section illustration. — Stock Photo
    Human heart anatomy showing valves, cross section illustration.
    Vascular system of female upper body, digital illustration — Stock Photo
    Vascular system of female upper body, digital illustration
    Illustration of transparent blue silhouette of male body with colored lungs. — Stock Photo
    Illustration of transparent blue silhouette of male body with colored lungs.
    Female anatomy showing vascular system, digital illustration. — Stock Photo
    Female anatomy showing vascular system, digital illustration.
    Pneumonia inflammatory condition of lung, digital illustration. — Stock Photo
    Pneumonia inflammatory condition of lung, digital illustration.
    Digital illustration of senior man anatomy showing lungs. — Stock Photo
    Digital illustration of senior man anatomy showing lungs.
    Illustration of silhouette of obese man with visible heart. — Stock Photo
    Illustration of silhouette of obese man with visible heart.
    Female vascular system, computer illustration. — Stock Photo
    Female vascular system, computer illustration.
    Illustration of silhouette of obese man with visible heart. — Stock Photo
    Illustration of silhouette of obese man with visible heart.
    3d rendered illustration of colored female bronchi in body silhouette. — Stock Photo
    3d rendered illustration of colored female bronchi in body silhouette.
    Female anatomy showing vascular system, digital illustration. — Stock Photo
    Female anatomy showing vascular system, digital illustration.
    Human heart anatomy showing valves, cross section illustration. — Stock Photo
    Human heart anatomy showing valves, cross section illustration.
    Female body with visible cardiovascular system, digital illustration — Stock Photo
    Female body with visible cardiovascular system, digital illustration
    Computer illustration of rod-shaped bacilli bacteria inside alveolus of lung, causing lower respiratory tract infection and bacterial pneumonia. — Stock Photo
    Computer illustration of rod-shaped bacilli bacteria inside alveolus of lung, causing lower respiratory tract infection and bacterial pneumonia.
    Female anatomy showing heart in transparent body silhouette, computer illustration. — Stock Photo
    Female anatomy showing heart in transparent body silhouette, computer illustration.
    Digital illustration of senior man anatomy showing lungs. — Stock Photo
    Digital illustration of senior man anatomy showing lungs.
    Abstract male silhouette with lung cancer, digital illustration. — Stock Photo
    Abstract male silhouette with lung cancer, digital illustration.
    Male body silhouette showing heart anatomy, computer illustration. — Stock Photo
    Male body silhouette showing heart anatomy, computer illustration.
    Abstract male body with visible lymphatic system and heart, computer illustration. — Stock Photo
    Abstract male body with visible lymphatic system and heart, computer illustration.
    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.
    Runner silhouette with visible heart, composite digital illustration. — Stock Photo
    Runner silhouette with visible heart, composite digital illustration.
    3d rendered illustration of colored female lungs in body silhouette. — Stock Photo
    3d rendered illustration of colored female lungs in body silhouette.
    Heart anatomy in male thorax, computer illustration. — Stock Photo
    Heart anatomy in male thorax, computer illustration.
    Realistic human heart model on black background, computer illustration. — Stock Photo
    Realistic human heart model on black background, computer 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.
    Digital illustration of rod-shaped bacteria inside alveoli of lungs causing pneumonia. — Stock Photo
    Digital illustration of rod-shaped bacteria inside alveoli of lungs causing pneumonia.
    Digital artwork of human cells with cytomegalic inclusion disease symptom of cytomegalovirus infection. — Stock Photo
    Digital artwork of human cells with cytomegalic inclusion disease symptom of cytomegalovirus infection.
    Illustration of senior woman silhouette showing lungs on black background. — Stock Photo
    Illustration of senior woman silhouette showing lungs on black background.
    Female silhouette showing heart anatomy, computer illustration. — Stock Photo
    Female silhouette showing heart anatomy, computer illustration.
    Realistic human heart and blood vessels on black background, digital illustration. — Stock Photo
    Realistic human heart and blood vessels on black background, digital illustration.
    Digital illustration of human alveoli on white background. — Stock Photo
    Digital illustration of human alveoli on white background.
    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.
    Illustration of female silhouette with highlighted trachea. — Stock Photo
    Illustration of female silhouette with highlighted trachea.
    Transparent male silhouette with colored lungs, computer illustration. — Stock Photo
    Transparent male silhouette with colored lungs, computer illustration.
    Vascular system in normal female body, digital illustration — Stock Photo
    Vascular system in normal female body, digital illustration