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    Sick boy in oxygen mask sitting on sofa at home and playing video game on tablet — Stock Photo
    Sick boy in oxygen mask sitting on sofa at home and playing video game on tablet
    Astrocyte glial nerve cell, digital illustration. — Stock Photo
    Astrocyte glial nerve cell, digital illustration.
    Front view of beautiful mixed race female doctor in hijab giving medicine to mature mixed-race female patient in the ward at hospital — Stock Photo
    Front view of beautiful mixed race female doctor in hijab giving medicine to mature mixed-race female patient in the ward at hospital
    Doctor and paramedics examining a patient in emergency room at hospital — Stock Photo
    Doctor and paramedics examining a patient in emergency room at hospital
    Team of surgeons with scalpel are operation together on background of surgical lamp,Point of view shot. — Stock Photo
    Team of surgeons with scalpel are operation together on background of surgical lamp,Point of view shot.
    Doctor putting on woman resuscitation mask. — Stock Photo
    Doctor putting on woman resuscitation mask.
    Man Standing Contempling Mountain Landscape. ARGENTINA — Stock Photo
    Man Standing Contempling Mountain Landscape. ARGENTINA
    Hands of doctor placing oxygen mask on a pregnant woman face in operating room — Stock Photo
    Hands of doctor placing oxygen mask on a pregnant woman face in operating room
    Ward boy pushing senior patient on stretcher in hospital corridor — Stock Photo
    Ward boy pushing senior patient on stretcher in hospital corridor
    Front view of beautiful mixed-race female doctor in hijab checking mixed-race female patient temperature with hand in the ward at hospital. — Stock Photo
    Front view of beautiful mixed-race female doctor in hijab checking mixed-race female patient temperature with hand in the ward at hospital.
    Loving mother with infrared thermometer measuring temperature of boy breathing in oxygen mask during inhalation procedure and watching cartoon on tablet at home — Stock Photo
    Loving mother with infrared thermometer measuring temperature of boy breathing in oxygen mask during inhalation procedure and watching cartoon on tablet at home
    Anesthesiologist holding oxygen mask over patient?s face in operating room — Stock Photo
    Anesthesiologist holding oxygen mask over patient?s face in operating room
    Group of surgeons performing operation in operation theater of hospital — Stock Photo
    Group of surgeons performing operation in operation theater of hospital
    Scuba divers at Secret Spot Dive Site, Belize Barrier Reef, Turneffe Atoll; Belize — Stock Photo
    Scuba divers at Secret Spot Dive Site, Belize Barrier Reef, Turneffe Atoll; Belize
    Doctor putting oxygen mask on patient in hospital — Stock Photo
    Doctor putting oxygen mask on patient in hospital
    Back view of anonymous sportspeople silhouettes with diving equipment and photo camera swimming under sea water with bubbles — Stock Photo
    Back view of anonymous sportspeople silhouettes with diving equipment and photo camera swimming under sea water with bubbles
    Top view of little boy with asthma using inhaler while lying down on sofa at home — Stock Photo
    Top view of little boy with asthma using inhaler while lying down on sofa at home
    Philippines, Boracay Island. White Beach. — Stock Photo
    Philippines, Boracay Island. White Beach.
    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
    Doctors adjusting oxygen mask while rushing the patient in emergency room at hospital — Stock Photo
    Doctors adjusting oxygen mask while rushing the patient in emergency room at hospital
    Oxygen mask and tube on white background. — Stock Photo
    Oxygen mask and tube on white background.
    Crop unrecognizable female vet with coworker in uniform standing at medical table with cat and tools during surgery — Stock Photo
    Crop unrecognizable female vet with coworker in uniform standing at medical table with cat and tools during surgery
    Close-up of patient with oxygen mask in operating room — Stock Photo
    Close-up of patient with oxygen mask in operating room
    Crop unrecognizable woman using modern pulse oximeter on finger of kid for measuring oxygen level in blood — Stock Photo
    Crop unrecognizable woman using modern pulse oximeter on finger of kid for measuring oxygen level in blood
    Scuba diver underwater under sun beams — Stock Photo
    Scuba diver underwater under sun beams
    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
    Surgeons adjusting oxygen mask on patient in operation theater of hospital — Stock Photo
    Surgeons adjusting oxygen mask on patient in operation theater of hospital
    Young boy sitting and inhaling through a oxygen mask at home. — Stock Photo
    Young boy sitting and inhaling through a oxygen mask at home.
    Athlete in oxygen mask riding exercise bike with measuring of oxygen consumption. — Stock Photo
    Athlete in oxygen mask riding exercise bike with measuring of oxygen consumption.
    High angle view of thoughtful mixed race female patient relaxing in bed in the ward at hospital. Woman is keeping her hands on chest. — Stock Photo
    High angle view of thoughtful mixed race female patient relaxing in bed in the ward at hospital. Woman is keeping her hands on chest.
    Front view of Caucasian male patient sleeping on bed in the ward at hospital. — Stock Photo
    Front view of Caucasian male patient sleeping on bed in the ward at hospital.
    Senior woman with nasal cannula and IV bag and nurse holding tray in background, close-up. — Stock Photo
    Senior woman with nasal cannula and IV bag and nurse holding tray in background, close-up.
    Side view of diverse male patients interacting with each other in the ward at hospital. Caucasian male patient lying in bed while mixed-race patient sits in wheelchair. — Stock Photo
    Side view of diverse male patients interacting with each other in the ward at hospital. Caucasian male patient lying in bed while mixed-race patient sits in wheelchair.
    Paramedics examining injured boy on street — Stock Photo
    Paramedics examining injured boy on street
    Scenic view of scuba divers swimming under water — Stock Photo
    Scenic view of scuba divers swimming under water
    Colored scanning electron micrograph of red blood cells. — Stock Photo
    Colored scanning electron micrograph of red blood cells.
    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
    Nurse consoling senior patient with doctor in hospital — Stock Photo
    Nurse consoling senior patient with doctor in hospital
    Red blood cells aggregated — Stock Photo
    Red blood cells aggregated
    Surgeon holding oxygen mask in operation room at hospital — Stock Photo
    Surgeon holding oxygen mask in operation room at hospital
    Paramedic giving oxygen to injured woman at accident spot — Stock Photo
    Paramedic giving oxygen to injured woman at accident spot
    Senior woman with nasal cannula with eyes closed, close-up. — Stock Photo
    Senior woman with nasal cannula with eyes closed, close-up.
    Team of doctors putting oxygen mask on a male senior patient face in the hospital — Stock Photo
    Team of doctors putting oxygen mask on a male senior patient face in the hospital
    Portrait of beautiful young mixed race female patient lying on bed with hands on stomach in the ward in hospital. Pulse oximetry is measuring the oxygen level in her blood. — Stock Photo
    Portrait of beautiful young mixed race female patient lying on bed with hands on stomach in the ward in hospital. Pulse oximetry is measuring the oxygen level in her blood.
    Anesthesiologist holding oxygen mask over patient's face in operating theater — Stock Photo
    Anesthesiologist holding oxygen mask over patient's face in operating theater
    Front view of mixed race female doctor interacting with Caucasian male patient in the ward at hospital — Stock Photo
    Front view of mixed race female doctor interacting with Caucasian male patient in the ward at hospital
    Red blood cells flowing inside an artery — Stock Photo
    Red blood cells flowing inside an artery
    Group of surgeons performing operation in operation theater of hospital — Stock Photo
    Group of surgeons performing operation in operation theater of hospital
    Pulse oximeter, blood oxygen saturation monitor. — Stock Photo
    Pulse oximeter, blood oxygen saturation monitor.
    Red blood cells. Coloured scanning electron micrograph (SEM) of red blood cells (RBCs, erythrocytes). Red blood cells are biconcave, disc-shaped cells that transport oxygen from the lungs to body cells — Stock Photo
    Red blood cells. Coloured scanning electron micrograph (SEM) of red blood cells (RBCs, erythrocytes). Red blood cells are biconcave, disc-shaped cells that transport oxygen from the lungs to body cells
    Side view of surgeon comforting pregnant woman during labor in operation theater at hospital — Stock Photo
    Side view of surgeon comforting pregnant woman during labor in operation theater at hospital
    Oxygen pressure gauge on cylinder of medical oxygen. — Stock Photo
    Oxygen pressure gauge on cylinder of medical oxygen.
    Senior patient lying on bed with oxygen mask on face in hospital — Stock Photo
    Senior patient lying on bed with oxygen mask on face in hospital
    Paramedic giving oxygen to injured girl at accident spot — Stock Photo
    Paramedic giving oxygen to injured girl at accident spot
    Red blood cells — Stock Photo
    Red blood cells
    Red blood cells and white blood cells — Stock Photo
    Red blood cells and white blood cells
    Side view of pretty mixed-race female patient using digital tablet in the ward at hospital. — Stock Photo
    Side view of pretty mixed-race female patient using digital tablet in the ward at hospital.
    Front view of surgeons concentrated performing operation in operating room at hospital against spots and digital screen in background — Stock Photo
    Front view of surgeons concentrated performing operation in operating room at hospital against spots and digital screen in background
    Paramedic giving oxygen to injured girl at accident spot — Stock Photo
    Paramedic giving oxygen to injured girl at accident spot
    Front view of diverse male patients interacting with each other in the ward at hospital.Caucasian male patient lying in bed while mixed-race patient sits in wheelchair. — Stock Photo
    Front view of diverse male patients interacting with each other in the ward at hospital.Caucasian male patient lying in bed while mixed-race patient sits in wheelchair.