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    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
    Senior woman using asthma inhaler with extension tube. — Stock Photo
    Senior woman using asthma inhaler with extension tube.
    Female paramedic practicing mouth to mouth CPR training outdoors. — Stock Photo
    Female paramedic practicing mouth to mouth CPR training outdoors.
    Senior woman using asthma inhaler with extension tube. — Stock Photo
    Senior woman using asthma inhaler with extension tube.
    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.
    Blood vessel in the lung — Stock Photo
    Blood vessel in the lung
    Lung and bronchi structure — Stock Photo
    Lung and bronchi structure
    Pneumonia inflammatory condition of lungs, digital illustration. — Stock Photo
    Pneumonia inflammatory condition of lungs, digital illustration.
    3d illustration of a mitochondrion within a cell. Mitochondria are organelles found in the cytoplasm of eukaryotic cells. They oxidase sugars and fats to produce energy — Stock Photo
    3d illustration of a mitochondrion within a cell. Mitochondria are organelles found in the cytoplasm of eukaryotic cells. They oxidase sugars and fats to produce energy
    Little boy blowing nose in hospital on check up — Stock Photo
    Little boy blowing nose in hospital on check up
    Anatomy of person coughing — Stock Photo
    Anatomy of person coughing
    Female paramedic using defibrillator while training outdoors. — Stock Photo
    Female paramedic using defibrillator while training outdoors.
    Sick boy getting inhalation treatment in clinic — Stock Photo
    Sick boy getting inhalation treatment in clinic
    Spring flowers representing healthy and unhealthy human lungs, conceptual studio shot. — Stock Photo
    Spring flowers representing healthy and unhealthy human lungs, conceptual studio shot.
    Female paramedic practicing mouth-to-mouth while CPR training outdoors. — Stock Photo
    Female paramedic practicing mouth-to-mouth while CPR training outdoors.
    Female paramedic defibrillator training with dummy outdoors. — Stock Photo
    Female paramedic defibrillator training with dummy outdoors.
    Paramedic giving oxygen to injured girl at accident spot — Stock Photo
    Paramedic giving oxygen to injured girl at accident spot
    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.
    Lung cancer, digital illustration and light micrograph of cancerous tissue. — Stock Photo
    Lung cancer, digital illustration and light micrograph of cancerous tissue.
    Whooping cough contagious infectious lungs disease and close-up of Bordetella pertussis bacteria. — Stock Photo
    Whooping cough contagious infectious lungs disease and close-up of Bordetella pertussis bacteria.
    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.
    Asthma spacer against white background. — Stock Photo
    Asthma spacer against white background.
    Unrecognizable person wearing silver costume with breathing apparatus and hose attached to potted plant standing in shabby abandoned room — Stock Photo
    Unrecognizable person wearing silver costume with breathing apparatus and hose attached to potted plant standing in shabby abandoned room
    Digital illustration of rod-shaped bacteria inside alveoli of lungs causing pneumonia. — Stock Photo
    Digital illustration of rod-shaped bacteria inside alveoli of lungs causing pneumonia.
    Medical teacher demonstrating tracheal intubation using demonstration model. — Stock Photo
    Medical teacher demonstrating tracheal intubation using demonstration model.
    Spring flowers representing healthy human lungs, conceptual studio shot. — Stock Photo
    Spring flowers representing healthy human lungs, conceptual studio shot.
    Pneumonia caused by bacterium Pseudomonas aeruginosa, digital illustration. — Stock Photo
    Pneumonia caused by bacterium Pseudomonas aeruginosa, digital 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.
    Digital illustration of rod-shaped bacteria inside alveoli of lungs causing pneumonia. — Stock Photo
    Digital illustration of rod-shaped bacteria inside alveoli of lungs causing pneumonia.
    Female paramedic CPR training outdoors. — Stock Photo
    Female paramedic CPR training outdoors.
    Little boy blowing nose in hospital on check up — Stock Photo
    Little boy blowing nose in hospital on check up
    Human sinuses structure and anatomy — Stock Photo
    Human sinuses structure and anatomy
    Healthy lungs and respiratory system — Stock Photo
    Healthy lungs and respiratory system
    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
    Hands of female paramedic CPR training outdoors. — Stock Photo
    Hands of female paramedic CPR training outdoors.
    Normal male anatomy — Stock Photo
    Normal male anatomy
    Illustration of Streptococcus pneumoniae bacteria inside alveoli of lungs causing pneumonia. — Stock Photo
    Illustration of Streptococcus pneumoniae bacteria inside alveoli of lungs causing pneumonia.
    Human chest anatomy — Stock Photo
    Human chest anatomy
    Computer illustration of alveoli in human lungs — Stock Photo
    Computer illustration of alveoli in human lungs
    Doctor practicing tracheal intubation on training dummy. — Stock Photo
    Doctor practicing tracheal intubation on training dummy.
    Normal human alveoli — Stock Photo
    Normal human alveoli
    Spirometry. Using digital spirometer with smart phone app, testing lungs. — Stock Photo
    Spirometry. Using digital spirometer with smart phone app, testing lungs.
    Human skeleton in warrior 1 yoga pose, or virabhadrasana 1. Computer illustration showing skeletal activity in this yoga posture. — Stock Photo
    Human skeleton in warrior 1 yoga pose, or virabhadrasana 1. Computer illustration showing skeletal activity in this yoga posture.
    Human alveoli anatomy — Stock Photo
    Human alveoli anatomy
    Hands of female paramedic CPR training outdoors. — Stock Photo
    Hands of female paramedic CPR training outdoors.
    Human respiratory system, illustration. — Stock Photo
    Human respiratory system, illustration.
    Human sinuses cavities — Stock Photo
    Human sinuses cavities
    Human sinuses structure and anatomy — Stock Photo
    Human sinuses structure and anatomy
    Instructor helping female paramedic using defibrillator training outdoors. — Stock Photo
    Instructor helping female paramedic using defibrillator training outdoors.
    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.
    Lung cancer, digital illustration and light micrograph of cancerous tissue. — Stock Photo
    Lung cancer, digital illustration and light micrograph of cancerous tissue.
    Doctor practicing tracheal intubation on training dummy. — Stock Photo
    Doctor practicing tracheal intubation on training dummy.
    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
    Female paramedic CPR training with dummy outdoors. — Stock Photo
    Female paramedic CPR training with dummy outdoors.
    Human alveoli anatomy — Stock Photo
    Human alveoli anatomy
    Instructor helping female paramedic with CPR training outdoors. — Stock Photo
    Instructor helping female paramedic with CPR training outdoors.
    Adult bearded man in sportswear sitting crossed legged and meditating with closed eyes and clasped hands during yoga training in geometric room — Stock Photo
    Adult bearded man in sportswear sitting crossed legged and meditating with closed eyes and clasped hands during yoga training in geometric room
    Female paramedic defibrillator training with dummy outdoors. — Stock Photo
    Female paramedic defibrillator training with dummy outdoors.
    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.
    Young woman closing eyes while meditating with Eagle arms while practicing yoga — Stock Photo
    Young woman closing eyes while meditating with Eagle arms while practicing yoga