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    Bacterial sinusitis, computer illustration. The sinuses are membrane-lined air-filled spaces in the bones of the face. The frontal sinuses are above the eyes. Below these are the many lobed ethmoid sinuses and behind them the sphenoid sinuses — Stock Photo
    Bacterial sinusitis, computer illustration. The sinuses are membrane-lined air-filled spaces in the bones of the face. The frontal sinuses are above the eyes. Below these are the many lobed ethmoid sinuses and behind them the sphenoid sinuses
    Three dimensional medical illustration of male chest with arteries, veins, heart and rib cage — Stock Photo
    Three dimensional medical illustration of male chest with arteries, veins, heart and rib cage
    Coloured scanning electron micrograph (SEM) of epithelial cells lining the human trachea (windpipe). — Stock Photo
    Coloured scanning electron micrograph (SEM) of epithelial cells lining the human trachea (windpipe).
    Lungs in anatomy of male body, computer illustration. — Stock Photo
    Lungs in anatomy of male body, computer illustration.
    Lungs in anatomy of male body, computer illustration. — Stock Photo
    Lungs in anatomy of male body, computer illustration.
    Yellow colored bronchi in body of woman, computer illustration. — Stock Photo
    Yellow colored bronchi in body of woman, computer illustration.
    Human lungs and other internal organs — Stock Photo
    Human lungs and other internal organs
    3d rendered illustration of colored female larynx in body silhouette. — Stock Photo
    3d rendered illustration of colored female larynx in body silhouette.
    Whooping cough (Bordetella pertussis) bacteria in respiratory tract — Stock Photo
    Whooping cough (Bordetella pertussis) bacteria in respiratory tract
    Illustration of larynx in male body silhouette, close-up. — Stock Photo
    Illustration of larynx in male body silhouette, close-up.
    Abstract male figure showing colored bronchi, computer illustration. — Stock Photo
    Abstract male figure showing colored bronchi, computer illustration.
    Illustration of figure of obese man with visible larynx. — Stock Photo
    Illustration of figure of obese man with visible larynx.
    Illustration of senior woman blue silhouette with highlighted larynx on black background. — Stock Photo
    Illustration of senior woman blue silhouette with highlighted larynx on black background.
    Light micrograph (LM) of a vertical section through the pseudostratified columnar epithelium from the trachea, the tube in the throat leading from the mouth to the bronchus and the lungs. — Stock Photo
    Light micrograph (LM) of a vertical section through the pseudostratified columnar epithelium from the trachea, the tube in the throat leading from the mouth to the bronchus and the lungs.
    Illustration of human silhouette with inflamed larynx. — Stock Photo
    Illustration of human silhouette with inflamed larynx.
    Mucosa of the trachea — Stock Photo
    Mucosa of the trachea
    Illustration of silhouette of obese man with visible larynx. — Stock Photo
    Illustration of silhouette of obese man with visible larynx.
    Illustration of female silhouette with highlighted larynx. — Stock Photo
    Illustration of female silhouette with highlighted larynx.
    Illustration of human lungs and bronchi cancer. — Stock Photo
    Illustration of human lungs and bronchi cancer.
    3d rendered illustration of colored female bronchi in body silhouette. — Stock Photo
    3d rendered illustration of colored female bronchi in body silhouette.
    Illustration of silhouette of obese man with visible larynx. — Stock Photo
    Illustration of silhouette of obese man with visible larynx.
    3d rendered illustration of colored female larynx cancer in body silhouette. — Stock Photo
    3d rendered illustration of colored female larynx cancer in body silhouette.
    Bacterial sinusitis, computer illustration. The sinuses are membrane-lined air-filled spaces in the bones of the face. The frontal sinuses are above the eyes. Below these are the many lobed ethmoid sinuses and behind them the sphenoid sinuses — Stock Photo
    Bacterial sinusitis, computer illustration. The sinuses are membrane-lined air-filled spaces in the bones of the face. The frontal sinuses are above the eyes. Below these are the many lobed ethmoid sinuses and behind them the sphenoid sinuses
    Illustration of senior man silhouette with visible lungs. — Stock Photo
    Illustration of senior man silhouette with visible lungs.
    Abstract male figure showing colored bronchi, computer illustration. — Stock Photo
    Abstract male figure showing colored bronchi, computer illustration.
    Orange colored lungs in female body silhouette, computer illustration. — Stock Photo
    Orange colored lungs in female body silhouette, computer illustration.
    Horse anatomy of upper body, computer illustration. — Stock Photo
    Horse anatomy of upper body, computer illustration.
    Horse anatomy of upper body, computer illustration. — Stock Photo
    Horse anatomy of upper body, computer illustration.
    Human lungs with bacterial pneumonia and close-up of bacteria. — Stock Photo
    Human lungs with bacterial pneumonia and close-up of bacteria.
    Female larynx, anatomical digital illustration. — Stock Photo
    Female larynx, anatomical digital illustration.
    Trachea lining. Coloured transmission electron micrograph (TEM) of a longitudinal section through the lining of the trachea (windpipe), which links the larynx (voicebox) to the lungs — Stock Photo
    Trachea lining. Coloured transmission electron micrograph (TEM) of a longitudinal section through the lining of the trachea (windpipe), which links the larynx (voicebox) to the lungs
    Coloured 3D computed tomography (CT) scan of the healthy lungs of a 30 year old patient. — Stock Photo
    Coloured 3D computed tomography (CT) scan of the healthy lungs of a 30 year old patient.
    Illustration of senior woman silhouette with colored larynx on black background. — Stock Photo
    Illustration of senior woman silhouette with colored larynx on black background.
    Colored lungs in transparent female body on black background, computer illustration. — Stock Photo
    Colored lungs in transparent female body on black background, computer illustration.
    Medical illustration of visible bronchi in human body. — Stock Photo
    Medical illustration of visible bronchi in human body.
    Illustration of human silhouette with inflamed lungs. — Stock Photo
    Illustration of human silhouette with inflamed lungs.
    Illustration of silhouette of obese man with visible lungs. — Stock Photo
    Illustration of silhouette of obese man with visible lungs.
    Illustration of transparent gray silhouette of male body with colored bronchi. — Stock Photo
    Illustration of transparent gray silhouette of male body with colored bronchi.
    Illustration on black of silhouette of obese woman with highlighted larynx. — Stock Photo
    Illustration on black of silhouette of obese woman with highlighted larynx.
    Illustration of lung cancer in human body silhouette. — Stock Photo
    Illustration of lung cancer in human body silhouette.
    Human larynx, computer illustration — Stock Photo
    Human larynx, computer illustration
    Illustration of larynx in male body silhouette on black background. — Stock Photo
    Illustration of larynx in male body silhouette on black background.
    Close-up illustration of larynx in male body silhouette. — Stock Photo
    Close-up illustration of larynx in male body silhouette.
    Abstract transparent male body with glowing larynx cancer, digital illustration. — Stock Photo
    Abstract transparent male body with glowing larynx 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.
    Illustration of senior woman with lung tumour on black background. — Stock Photo
    Illustration of senior woman with lung tumour on black background.
    Diseased lungs in transparent male body on white background, computer illustration. — Stock Photo
    Diseased lungs in transparent male body on white background, computer illustration.
    Red colored lungs in female body silhouette on blue background, digital illustration. — Stock Photo
    Red colored lungs in female body silhouette on blue background, digital illustration.
    Horse anatomy with visible internal organs on white background, computer illustration. — Stock Photo
    Horse anatomy with visible internal organs on white background, computer illustration.
    Anatomy of thyroid gland with larynx and cartilage — Stock Photo
    Anatomy of thyroid gland with larynx and cartilage
    Close-up illustration of larynx in male body silhouette. — Stock Photo
    Close-up illustration of larynx in male body silhouette.
    Anatomical male body with colored bronchi, computer illustration. — Stock Photo
    Anatomical male body with colored bronchi, computer illustration.
    Lung cancer in female transparent body, conceptual computer illustration. — Stock Photo
    Lung cancer in female transparent body, conceptual computer illustration.
    Side view illustration of blue silhouette of obese woman with highlighted larynx. — Stock Photo
    Side view illustration of blue silhouette of obese woman with highlighted larynx.
    Anatomical model of internal organs with cross section on white background. — Stock Photo
    Anatomical model of internal organs with cross section on white background.
    Illustration of silhouette of obese man with visible lungs. — Stock Photo
    Illustration of silhouette of obese man with visible lungs.
    Illustration of bronchi in transparent male silhouette. — Stock Photo
    Illustration of bronchi in transparent male silhouette.
    Horse anatomy with visible internal organs on white background, computer illustration. — Stock Photo
    Horse anatomy with visible internal organs on white background, computer illustration.
    Human lungs with pneumonia and close-up of bacteria and viruses. — Stock Photo
    Human lungs with pneumonia and close-up of bacteria and viruses.
    Illustration of blue silhouette of obese woman with highlighted lungs on white background. — Stock Photo
    Illustration of blue silhouette of obese woman with highlighted lungs on white background.