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    Human heart model on white background, computer illustration. — Stock Photo
    Human heart model on white background, computer illustration.
    Female anatomy showing vascular system, digital illustration. — Stock Photo
    Female anatomy showing vascular system, digital illustration.
    Illustration of blue silhouette of obese woman with highlighted lungs on black background. — Stock Photo
    Illustration of blue silhouette of obese woman with highlighted lungs on black background.
    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.
    Vascular system of female upper body, computer illustration. — Stock Photo
    Vascular system of female upper body, computer illustration.
    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 alveoli anatomy — Stock Photo
    Human alveoli anatomy
    Digital illustration of senior man anatomy showing heart. — Stock Photo
    Digital illustration of senior man anatomy showing heart.
    Human body model showing male anatomy and blood vessels, digital illustration. — Stock Photo
    Human body model showing male anatomy and blood vessels, 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.
    Illustration of Mycobacterium tuberculosis bacteria, the Gram-positive rod-shaped bacteria which cause the disease tuberculosis (TB). The disease affects the lungs and sometimes other parts of the body — Stock Photo
    Illustration of Mycobacterium tuberculosis bacteria, the Gram-positive rod-shaped bacteria which cause the disease tuberculosis (TB). The disease affects the lungs and sometimes other parts of the body
    Macrophages engulfing tuberculosis bacteria — Stock Photo
    Macrophages engulfing tuberculosis bacteria
    Illustration of three bypasses in human heart. — Stock Photo
    Illustration of three bypasses in human heart.
    Lung cancer, digital illustration and light micrograph of cancerous tissue. — Stock Photo
    Lung cancer, digital illustration and light micrograph of cancerous tissue.
    Illustration of female silhouette with highlighted lung cancer. — Stock Photo
    Illustration of female silhouette with highlighted lung cancer.
    Abstract male figure showing colored human heart, computer illustration. — Stock Photo
    Abstract male figure showing colored human heart, computer illustration.
    Digital anatomical illustration of arteries and veins in body of senior man. — Stock Photo
    Digital anatomical illustration of arteries and veins in body of senior man.
    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 highlighted lung tumor. — Stock Photo
    Illustration of silhouette of obese man with highlighted lung tumor.
    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.
    Female anatomy showing heart in transparent body silhouette, computer illustration. — Stock Photo
    Female anatomy showing heart in transparent body silhouette, computer illustration.
    Mid section illustration of heart in male body silhouette. — Stock Photo
    Mid section illustration of heart in male body silhouette.
    Realistic human heart model on black background, computer illustration. — Stock Photo
    Realistic human heart model on black background, computer illustration.
    Pneumonia inflammatory condition of lung, digital illustration. — Stock Photo
    Pneumonia inflammatory condition of lung, digital illustration.
    Realistic human heart model on black background, computer illustration. — Stock Photo
    Realistic human heart model on black background, 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.
    Cardiovascular system in male body, computer illustration. — Stock Photo
    Cardiovascular system in male body, computer illustration.
    Close-up illustration of trachea in male body silhouette, close-up. — Stock Photo
    Close-up illustration of trachea in male body silhouette, close-up.
    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 heart and vascular system, digital illustration. — Stock Photo
    Female heart and vascular system, digital illustration.
    Bacterial lung infection, illustration. — Stock Photo
    Bacterial lung infection, illustration.