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    Caucasian and a mixed race sportsmen wearing protective fencing outfits during a fencing training session, taking aim and lunging at each other with their epees. fencers training at a gym. — Stock Photo
    Caucasian and a mixed race sportsmen wearing protective fencing outfits during a fencing training session, taking aim and lunging at each other with their epees. fencers training at a gym.
    Lungs cancer, digital illustration showing malignant tumour in lung. — Stock Photo
    Lungs cancer, digital illustration showing malignant tumour in lung.
    Plitvice Lakes National Park is the oldest and largest national park in Croatia. It was added to the UNESCO World Heritage register in 1979. — Stock Photo
    Plitvice Lakes National Park is the oldest and largest national park in Croatia. It was added to the UNESCO World Heritage register in 1979.
    3D rendering of human lungs on black background — Stock Photo
    3D rendering of human lungs on black background
    Caucasian and African American sportswomen wearing protective fencing outfits during a fencing training session, lunging at each other with their epees. Fencers training at gym. — Stock Photo
    Caucasian and African American sportswomen wearing protective fencing outfits during a fencing training session, lunging at each other with their epees. Fencers training at gym.
    Full body of positive female in activewear performing Horizon Lunge asana during yoga session in studio — Stock Photo
    Full body of positive female in activewear performing Horizon Lunge asana during yoga session in studio
    Digital illustration and light micrograph of squamous cell carcinoma of lung. — Stock Photo
    Digital illustration and light micrograph of squamous cell carcinoma of lung.
    Crop unrecognizable female runner stretching legs and doing forward lunge exercise while training on promenade in summer — Stock Photo
    Crop unrecognizable female runner stretching legs and doing forward lunge exercise while training on promenade in summer
    SARS-CoV-2 viruses and activated neutrophil, conceptual computer illustration — Stock Photo
    SARS-CoV-2 viruses and activated neutrophil, conceptual computer illustration
    Illustration of Nipah viruses binding to receptors on human cells, an initial stage of Nipah infection. Nipah virus is zoonotic (transmitted to humans from animals) and was first found in Malaysia and Singapore — Stock Photo
    Illustration of Nipah viruses binding to receptors on human cells, an initial stage of Nipah infection. Nipah virus is zoonotic (transmitted to humans from animals) and was first found in Malaysia and Singapore
    Cancer cells, computer illustration — Stock Photo
    Cancer cells, computer illustration
    Alveoli structure and blood supply — Stock Photo
    Alveoli structure and blood supply
    Side view of flexible female in sports clothes demonstrating Anjaneyasana pose while practicing yoga on mat and looking up — Stock Photo
    Side view of flexible female in sports clothes demonstrating Anjaneyasana pose while practicing yoga on mat and looking up
    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.
    Illustration of Nipah viruses binding to receptors on human cells, an initial stage of Nipah infection. Nipah virus is zoonotic (transmitted to humans from animals) and was first found in Malaysia and Singapore — Stock Photo
    Illustration of Nipah viruses binding to receptors on human cells, an initial stage of Nipah infection. Nipah virus is zoonotic (transmitted to humans from animals) and was first found in Malaysia and Singapore
    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.
    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.
    Spring flowers representing healthy human lungs, conceptual studio shot. — Stock Photo
    Spring flowers representing healthy human lungs, conceptual studio shot.
    Digital illustration of human alveoli on white background. — Stock Photo
    Digital illustration of human alveoli on white background.
    Fungus Sporothrix schenckii, causative agent of infection sporotrichosis, computer illustration. Fungal threads of vegetative mycelium are seen, each thread is called hypha, with spores produced from some hyphae — Stock Photo
    Fungus Sporothrix schenckii, causative agent of infection sporotrichosis, computer illustration. Fungal threads of vegetative mycelium are seen, each thread is called hypha, with spores produced from some hyphae
    Normal human alveoli anatomy — Stock Photo
    Normal human alveoli anatomy
    Illustration of spores of the yeast-like fungus Histoplasma capsulatum. When inhaled these spores can cause a respiratory disease called histoplasmosis — Stock Photo
    Illustration of spores of the yeast-like fungus Histoplasma capsulatum. When inhaled these spores can cause a respiratory disease called histoplasmosis
    Young barefoot female in sportswear practicing yoga on Crescent Pose against rocky mountain in sunlight — Stock Photo
    Young barefoot female in sportswear practicing yoga on Crescent Pose against rocky mountain in sunlight
    Nipah virus particles, computer illustration. Nipah virus is zoonotic (transmitted to humans from animals) and was first found in Malaysia and Singapore in people who had close contact with pigs — Stock Photo
    Nipah virus particles, computer illustration. Nipah virus is zoonotic (transmitted to humans from animals) and was first found in Malaysia and Singapore in people who had close contact with pigs
    Lungs cancer, digital illustration showing malignant tumour in lung. — Stock Photo
    Lungs cancer, digital illustration showing malignant tumour in lung.
    Side view of black female athlete lunging under bridge in morning in city — Stock Photo
    Side view of black female athlete lunging under bridge in morning in city
    SARS-CoV-2 viruses and activated neutrophil, conceptual computer illustration — Stock Photo
    SARS-CoV-2 viruses and activated neutrophil, conceptual computer illustration
    Normal human alveoli anatomy — Stock Photo
    Normal human alveoli anatomy
    Illustration of Klebsiella pneumoniae bacteria. K. pneumoniae are Gram-negative, encapsulated, non-motile, enteric, rod-shaped bacteria. This species causes Friedlander's pneumonia and urinary tract infections — Stock Photo
    Illustration of Klebsiella pneumoniae bacteria. K. pneumoniae are Gram-negative, encapsulated, non-motile, enteric, rod-shaped bacteria. This species causes Friedlander's pneumonia and urinary tract infections
    Medical illustration of female breast on white background — Stock Photo
    Medical illustration of female breast on white background
    Circulatory system and blood supply — Stock Photo
    Circulatory system and blood supply
    Spring flowers representing healthy human lungs, conceptual studio shot. — Stock Photo
    Spring flowers representing healthy human lungs, conceptual studio shot.
    Human silhouette showing lung cancer tumor, conceptual illustration. — Stock Photo
    Human silhouette showing lung cancer tumor, conceptual illustration.
    Digital illustration and light micrograph of squamous cell carcinoma of lung. — Stock Photo
    Digital illustration and light micrograph of squamous cell carcinoma of lung.
    Side view of shirtless male athlete working out on meadow under blue sky in town — Stock Photo
    Side view of shirtless male athlete working out on meadow under blue sky in town
    Young barefoot female athlete supporting partner standing on hand during training on pole in studio — Stock Photo
    Young barefoot female athlete supporting partner standing on hand during training on pole in studio
    Female athlete doing side lunge exercise and stretching legs while warming up during training on embankment near sea — Stock Photo
    Female athlete doing side lunge exercise and stretching legs while warming up during training on embankment near sea
    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.
    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.
    Lung cancer, digital illustration and light micrograph showing lung adenocarcinoma. — Stock Photo
    Lung cancer, digital illustration and light micrograph showing lung adenocarcinoma.
    Spirometry. Using digital spirometer with smart phone app, testing lungs. — Stock Photo
    Spirometry. Using digital spirometer with smart phone app, testing lungs.
    Ground level of crop anonymous plump female athlete working out on lawn against urban buildings in sunlight — Stock Photo
    Ground level of crop anonymous plump female athlete working out on lawn against urban buildings in sunlight
    Caucasian sportswomen wearing protective fencing outfit during a fencing training session, taking aim and lunging with epee at her opponent. Fencers training at gym. — Stock Photo
    Caucasian sportswomen wearing protective fencing outfit during a fencing training session, taking aim and lunging with epee at her opponent. Fencers training at gym.
    Caucasian and African American sportswomen wearing protective fencing outfits during a fencing training session, lunging at each other with their epees. Fencers training at gym. — Stock Photo
    Caucasian and African American sportswomen wearing protective fencing outfits during a fencing training session, lunging at each other with their epees. Fencers training at gym.
    Lung cancer cell — Stock Photo
    Lung cancer cell
    Spirometry. Using digital spirometer with smart phone app, testing lungs. — Stock Photo
    Spirometry. Using digital spirometer with smart phone app, testing lungs.
    Blood vessel in the lung — Stock Photo
    Blood vessel in the lung
    Black female athlete lunging near fence while warming up in morning in city — Stock Photo
    Black female athlete lunging near fence while warming up in morning in city
    Coloured X-ray of the chest of a 52 year old female patient with metastatic (secondary) lung cancer (yellow). — Stock Photo
    Coloured X-ray of the chest of a 52 year old female patient with metastatic (secondary) lung cancer (yellow).
    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.
    Concentrated female trainer in sportswear teaching man performing crescent lunge on knee with prayer hands during yoga session in studio — Stock Photo
    Concentrated female trainer in sportswear teaching man performing crescent lunge on knee with prayer hands during yoga session in studio
    Normal human alveoli anatomy — Stock Photo
    Normal human alveoli anatomy
    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.
    Conceptual illustration of coronavirus particles in human lungs. — Stock Photo
    Conceptual illustration of coronavirus particles in human lungs.
    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.
    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.
    Digital illustration of solid node in right lung near lung apex while secondary tuberculosis infection. — Stock Photo
    Digital illustration of solid node in right lung near lung apex while secondary tuberculosis infection.
    Medical illustration of alveoli on black background — Stock Photo
    Medical illustration of alveoli on black background
    False-colour scanning electron micrograph of a section of healthy lung tissue, showing the microscopic air sacs (alveoli) where gas exchange takes place. — Stock Photo
    False-colour scanning electron micrograph of a section of healthy lung tissue, showing the microscopic air sacs (alveoli) where gas exchange takes place.
    Smiling, confident women doing lunges in sunny park — Stock Photo
    Smiling, confident women doing lunges in sunny park