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    Illustration of the skeleton of a person in the tree pose, or Vrikshasana. — Stock Photo
    Illustration of the skeleton of a person in the tree pose, or Vrikshasana.
    Boy sitting on hospital bed with breathing equipment. — Stock Photo
    Boy sitting on hospital bed with breathing equipment.
    Severe acute respiratory syndrome virus — Stock Photo
    Severe acute respiratory syndrome virus
    Mitochondria cross-section, illustration. Mitochondria are organelles found in the cytoplasm of eukaryotic cells. They oxidise sugars and fats to produce energy in a process called cellular respiration — Stock Photo
    Mitochondria cross-section, illustration. Mitochondria are organelles found in the cytoplasm of eukaryotic cells. They oxidise sugars and fats to produce energy in a process called cellular respiration
    Side view of little boy with asthma using inhaler while sitting on sofa at home — Stock Photo
    Side view of little boy with asthma using inhaler while sitting on sofa at home
    Anatomy of warrior 1 pose, or virabhadrasana 1. Computer illustration showing a male body with highlighted skeleton demonstrating the skeletal activity of this yoga posture. — Stock Photo
    Anatomy of warrior 1 pose, or virabhadrasana 1. Computer illustration showing a male body with highlighted skeleton demonstrating the skeletal activity of this yoga posture.
    Blood vessel in the lung — Stock Photo
    Blood vessel in the lung
    Abstract fungi releasing allergic spores, 3d digital illustration. — Stock Photo
    Abstract fungi releasing allergic spores, 3d digital illustration.
    Female paramedic CPR training on baby dummy outdoors. — Stock Photo
    Female paramedic CPR training on baby dummy outdoors.
    Senior woman inhaling medicine from asthma pump. — Stock Photo
    Senior woman inhaling medicine from asthma pump.
    Paramedic giving oxygen to injured woman at accident spot — Stock Photo
    Paramedic giving oxygen to injured woman at accident spot
    Human sinuses cavities — Stock Photo
    Human sinuses cavities
    Doctor with oximeter examining little patient — Stock Photo
    Doctor with oximeter examining little patient
    Human lungs with bacterial pneumonia and close-up of bacteria. — Stock Photo
    Human lungs with bacterial pneumonia and close-up of bacteria.
    Pneumonia caused by bacteria Pseudomonas aeruginosa, digital illustration. — Stock Photo
    Pneumonia caused by bacteria Pseudomonas aeruginosa, digital illustration.
    Female paramedic practicing mouth to mouth CPR training outdoors. — Stock Photo
    Female paramedic practicing mouth to mouth CPR training outdoors.
    Human sinuses structure and anatomy — Stock Photo
    Human sinuses structure and anatomy
    Asthma nebulizer against white background. — Stock Photo
    Asthma nebulizer against white background.
    Female paramedic CPR training on dummy outdoors. — Stock Photo
    Female paramedic CPR training on dummy outdoors.
    Male doctor practicing rescue breathing on cardiopulmonary resuscitation training dummy. — Stock Photo
    Male doctor practicing rescue breathing on cardiopulmonary resuscitation training dummy.
    Spring flowers representing healthy human lungs, conceptual studio shot. — Stock Photo
    Spring flowers representing healthy human lungs, conceptual studio shot.
    Red blood cells aggregated — Stock Photo
    Red blood cells aggregated
    Human sinuses cavities — Stock Photo
    Human sinuses cavities
    Female paramedic CPR training with dummy outdoors. — Stock Photo
    Female paramedic CPR training with dummy outdoors.
    Woman with paramedic instructor CPR training on dummy outdoors. — Stock Photo
    Woman with paramedic instructor CPR training on dummy outdoors.
    Peak flow meter and chart against white background. — Stock Photo
    Peak flow meter and chart against white background.
    Lungs cancer, digital illustration showing malignant tumour in lung. — Stock Photo
    Lungs cancer, digital illustration showing malignant tumour in lung.
    Asthma inhaler against white background. — Stock Photo
    Asthma inhaler against white background.
    Side view of content sick boy using respirator and breathing oxygen from inhaler while sitting on sofa at home — Stock Photo
    Side view of content sick boy using respirator and breathing oxygen from inhaler while sitting on sofa at home
    Whooping cough bacterium (Bordetella pertussis), illustration. These rod-shaped Gram-negative bacilli cause whooping cough, known as pertussis, mainly in infants — Stock Photo
    Whooping cough bacterium (Bordetella pertussis), illustration. These rod-shaped Gram-negative bacilli cause whooping cough, known as pertussis, mainly in infants
    Lung cancer, digital illustration and light micrograph of cancerous tissue. — Stock Photo
    Lung cancer, digital illustration and light micrograph of cancerous tissue.
    Female and male doctors practicing cardiopulmonary resuscitation on infant training dummies. — Stock Photo
    Female and male doctors practicing cardiopulmonary resuscitation on infant training dummies.
    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.
    Paramedic giving oxygen to injured woman at accident spot — Stock Photo
    Paramedic giving oxygen to injured woman at accident spot
    Illustration of the skeleton of a person in the tree pose, or Vrikshasana. — Stock Photo
    Illustration of the skeleton of a person in the tree pose, or Vrikshasana.
    Digital illustration of human alveoli on white background. — Stock Photo
    Digital illustration of human alveoli on white background.
    Female and male doctors practicing cardiopulmonary resuscitation on infant training dummies. — Stock Photo
    Female and male doctors practicing cardiopulmonary resuscitation on infant training dummies.
    Side view of little boy with asthma using inhaler while lying down on sofa at home — Stock Photo
    Side view of little boy with asthma using inhaler while lying down on sofa at home
    Lung cancer, digital illustration and light micrograph of cancerous tissue. — Stock Photo
    Lung cancer, digital illustration and light micrograph of cancerous tissue.
    Side view of little boy with asthma using inhaler while sitting on sofa at home — Stock Photo
    Side view of little boy with asthma using inhaler while sitting on sofa at home
    Human lungs with pneumonia and close-up of bacteria and viruses. — Stock Photo
    Human lungs with pneumonia and close-up of bacteria and viruses.
    Side view unrecognizable person wearing silver costume with breathing apparatus and hose attached to potted plant standing in shabby abandoned room — Stock Photo
    Side view unrecognizable person wearing silver costume with breathing apparatus and hose attached to potted plant standing in shabby abandoned room
    Digital illustration and light micrograph of squamous cell carcinoma of lung. — Stock Photo
    Digital illustration and light micrograph of squamous cell carcinoma of lung.
    Human sinuses structure and anatomy — Stock Photo
    Human sinuses structure and anatomy
    Side view of content sick boy using respirator and breathing oxygen from inhaler while sitting on sofa at home — Stock Photo
    Side view of content sick boy using respirator and breathing oxygen from inhaler while sitting on sofa at home
    Computer illustration of alveoli in human lungs — Stock Photo
    Computer illustration of alveoli in human lungs
    Female paramedic CPR training on baby dummy with instructor outdoors. — Stock Photo
    Female paramedic CPR training on baby dummy with instructor outdoors.
    Doctor practicing tracheal intubation on training dummy. — Stock Photo
    Doctor practicing tracheal intubation on training dummy.
    Anatomy of person coughing — Stock Photo
    Anatomy of person coughing
    Tracheal intubation tools kit on table. — Stock Photo
    Tracheal intubation tools kit on table.
    Female doctor practicing cardiopulmonary resuscitation on infant training dummy. — Stock Photo
    Female doctor practicing cardiopulmonary resuscitation on infant training dummy.
    Female paramedic CPR training on baby dummy outdoors. — Stock Photo
    Female paramedic CPR training on baby dummy outdoors.
    Female paramedic CPR training outdoors. — Stock Photo
    Female paramedic CPR training outdoors.
    Newborn digestive and cardio-vascular systems — Stock Photo
    Newborn digestive and cardio-vascular systems
    Human skeleton in triangle yoga position, or trikonasana. Computer illustration showing skeletal activity in this yoga posture. — Stock Photo
    Human skeleton in triangle yoga position, or trikonasana. Computer illustration showing skeletal activity in this yoga posture.
    Newborn body organs — Stock Photo
    Newborn body organs
    Side view of little boy with asthma using inhaler while lying down on sofa at home — Stock Photo
    Side view of little boy with asthma using inhaler while lying down on sofa at home
    Newborn head and chest anatomy — Stock Photo
    Newborn head and chest anatomy
    Doctor practicing tracheal intubation on infant training dummy. — Stock Photo
    Doctor practicing tracheal intubation on infant training dummy.
    Paramedic giving oxygen to injured girl at accident spot — Stock Photo
    Paramedic giving oxygen to injured girl at accident spot