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    Male skeleton with visible vascular system, computer illustration. — Stock Photo
    Male skeleton with visible vascular system, computer illustration.
    Computer illustration of alveoli in human lungs — Stock Photo
    Computer illustration of alveoli in human lungs
    Human heart anatomy — Stock Photo
    Human heart anatomy
    Male body silhouette showing heart anatomy, computer illustration. — Stock Photo
    Male body silhouette showing heart anatomy, computer illustration.
    Human Bronchi, computer illustration — Stock Photo
    Human Bronchi, computer illustration
    Illustration of senior woman silhouette with colored heart on black background. — Stock Photo
    Illustration of senior woman silhouette with colored heart on black 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 silhouette of obese man with visible lungs. — Stock Photo
    Illustration of silhouette of obese man with visible lungs.
    Female body with heart attack, conceptual digital illustration. — Stock Photo
    Female body with heart attack, conceptual digital illustration.
    Illustration of transparent blue silhouette of male body with colored heart. — Stock Photo
    Illustration of transparent blue silhouette of male body with colored heart.
    Human heart with colored tricuspid valve, computer illustration. — Stock Photo
    Human heart with colored tricuspid valve, computer illustration.
    Human silhouette with infected lungs with Pulmonary blastomycosis and close-up of Blastomyces dermatitidis fungus particles. — Stock Photo
    Human silhouette with infected lungs with Pulmonary blastomycosis and close-up of Blastomyces dermatitidis fungus particles.
    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 biker heart on black background. — Stock Photo
    3d rendered illustration of biker heart on black background.
    Illustration of human heart anatomy on blue background. — Stock Photo
    Illustration of human heart anatomy on blue background.
    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.
    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.
    Male pediatrician teaching girl patient how to use inhaler in doctors office — Stock Photo
    Male pediatrician teaching girl patient how to use inhaler in doctors office
    Illustration of heart in transparent male silhouette. — Stock Photo
    Illustration of heart in transparent male silhouette.
    Male head and neck anatomy and blood vessels, computer illustration. — Stock Photo
    Male head and neck anatomy and blood vessels, computer illustration.
    Illustration of visible lungs in transparent human body silhouette. — Stock Photo
    Illustration of visible lungs in transparent human body silhouette.
    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 in male body, computer illustration. — Stock Photo
    Vascular system in male body, computer illustration.
    Man holding a heart, computer illustration. — Stock Photo
    Man holding a heart, computer illustration.
    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.
    Female anatomy showing heart in transparent body silhouette, computer illustration. — Stock Photo
    Female anatomy showing heart in transparent body silhouette, computer illustration.
    Digital artwork of Streptococcus pneumoniae bacteria inside alveoli of lung causing pneumonia. — Stock Photo
    Digital artwork of Streptococcus pneumoniae bacteria inside alveoli of lung causing pneumonia.
    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
    Male abdominal blood vessels, digital illustration. — Stock Photo
    Male abdominal blood vessels, digital illustration.
    Healthy lungs of a 30 year old patient — Stock Photo
    Healthy lungs of a 30 year old patient
    Realistic human heart model on black background, computer illustration. — Stock Photo
    Realistic human heart model on black background, computer illustration.
    Diseased lungs in transparent female body on black background, computer illustration. — Stock Photo
    Diseased lungs in transparent female body 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.
    Lung cancer, digital illustration and light micrograph of cancerous tissue. — Stock Photo
    Lung cancer, digital illustration and light micrograph of cancerous tissue.
    Transparent male silhouette with visible bronchi, computer illustration. — Stock Photo
    Transparent male silhouette with visible bronchi, computer illustration.
    Human upper body blood vessels, digital illustration. — Stock Photo
    Human upper body blood vessels, digital illustration.
    Medical illustration of alveoli on black background — Stock Photo
    Medical illustration of alveoli on black background
    Realistic human heart model on black background, computer illustration. — Stock Photo
    Realistic human heart model on black background, computer illustration.
    Digital illustration of senior man anatomy showing lungs. — Stock Photo
    Digital illustration of senior man anatomy showing lungs.
    Female silhouette showing heart anatomy, computer illustration. — Stock Photo
    Female silhouette showing heart anatomy, computer illustration.
    Digital illustration of rod-shaped bacteria inside alveoli of lung causing Bacterial pneumonia. — Stock Photo
    Digital illustration of rod-shaped bacteria inside alveoli of lung causing Bacterial pneumonia.
    Illustration of visible lungs in transparent human body silhouette. — Stock Photo
    Illustration of visible lungs in transparent human body silhouette.
    Grey human heart model on white background, computer illustration. — Stock Photo
    Grey human heart model on white background, computer illustration.
    Illustration of silhouette of obese man with visible heart. — Stock Photo
    Illustration of silhouette of obese man with visible heart.
    Vascular system of female human head, computer illustration. — Stock Photo
    Vascular system of female human head, computer illustration.
    Human heart model on white background, computer illustration. — Stock Photo
    Human heart model on white background, computer illustration.
    Diseased lungs in transparent male body on black background, computer illustration. — Stock Photo
    Diseased lungs in transparent male body on black background, computer illustration.
    Illustration of human heart anatomy on white background. — Stock Photo
    Illustration of human heart anatomy on white background.
    Conceptual illustration of coronavirus particles in human lungs. — Stock Photo
    Conceptual illustration of coronavirus particles in human lungs.
    Realistic human heart model on black background, computer illustration. — Stock Photo
    Realistic human heart model on black background, computer illustration.
    Illustration of human heart anatomy on grey background. — Stock Photo
    Illustration of human heart anatomy on grey background.
    Illustration of human lungs and bronchi cancer. — Stock Photo
    Illustration of human lungs and bronchi cancer.
    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.
    Human heart with disease, computer illustration. — Stock Photo
    Human heart with disease, computer illustration.
    Illustration of senior woman silhouette showing lungs on black background. — Stock Photo
    Illustration of senior woman silhouette showing lungs on black background.
    Human alveoli anatomy — Stock Photo
    Human alveoli anatomy
    Asthmatic boy using inhaler, close-up. — Stock Photo
    Asthmatic boy using inhaler, close-up.
    3d rendered illustration of colored female lungs in body silhouette. — Stock Photo
    3d rendered illustration of colored female lungs in body silhouette.
    Human silhouette with detailed lungs, digital illustration. — Stock Photo
    Human silhouette with detailed lungs, digital illustration.