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    Male patient with nasal cannula, portrait. — Stock Photo
    Male patient with nasal cannula, portrait.
    Boy in oxygen mask using nebulizer during inhalation while sitting on sofa and reading book — Stock Photo
    Boy in oxygen mask using nebulizer during inhalation while sitting on sofa and reading book
    Doctor practicing bag-valve-mask ventilation on training dummy. — Stock Photo
    Doctor practicing bag-valve-mask ventilation on training dummy.
    Scenic view of scuba divers swimming under water — Stock Photo
    Scenic view of scuba divers swimming under water
    Front view of beautiful thoughtful mixed race female patient lying on bed in the ward while looking outside in hospital. Pulse oximetry is measuring measuring the oxygen levels in her blood. — Stock Photo
    Front view of beautiful thoughtful mixed race female patient lying on bed in the ward while looking outside in hospital. Pulse oximetry is measuring measuring the oxygen levels in her blood.
    Male patient with nasal cannula, portrait. — Stock Photo
    Male patient with nasal cannula, portrait.
    Team of doctors putting oxygen mask on patient face in the hospital — Stock Photo
    Team of doctors putting oxygen mask on patient face in the hospital
    African american senior woman sitting on wheelchair with oxygen mask and looking through window. healthcare and lifestyle during covid 19 pandemic. — Stock Photo
    African american senior woman sitting on wheelchair with oxygen mask and looking through window. healthcare and lifestyle during covid 19 pandemic.
    Scenic view of scuba divers silhouettes swimming under water — Stock Photo
    Scenic view of scuba divers silhouettes swimming under water
    High angle view of thoughtful mixed-race female patient relaxing in bed in the ward at hospital — Stock Photo
    High angle view of thoughtful mixed-race female patient relaxing in bed in the ward at hospital
    Female patient with nasal cannula, portrait. — Stock Photo
    Female patient with nasal cannula, portrait.
    Side view of beautiful mixed-race female nurse in hijab interacting with mixed-race female patient in the ward at hospital. Nurse has stethoscope around her neck. — Stock Photo
    Side view of beautiful mixed-race female nurse in hijab interacting with mixed-race female patient in the ward at hospital. Nurse has stethoscope around her neck.
    Side view of Caucasian male patient sleeping in bed in the ward at hospital. In the background senior mixed-race male patient lying in bed. — Stock Photo
    Side view of Caucasian male patient sleeping in bed in the ward at hospital. In the background senior mixed-race male patient lying in bed.
    Nurse consoling senior patient with doctor in hospital — Stock Photo
    Nurse consoling senior patient with doctor in hospital
    Cancer cells with blood vessel formation — Stock Photo
    Cancer cells with blood vessel formation
    Female doctor putting oxygen mask on patient face in the hospital — Stock Photo
    Female doctor putting oxygen mask on patient face in the hospital
    Female doctor wearing mask anesthetizing mid adult man in hospital ward — Stock Photo
    Female doctor wearing mask anesthetizing mid adult man in hospital ward
    Measuring oxygen levels in blood with pulse oximeter. — Stock Photo
    Measuring oxygen levels in blood with pulse oximeter.
    Paramedics examining injured boy on street — Stock Photo
    Paramedics examining injured boy on street
    Scuba diver at the Three Amigos Dive Site, Belize Barrier Reef; Belize — Stock Photo
    Scuba diver at the Three Amigos Dive Site, Belize Barrier Reef; Belize
    Surgeons performing operation in operation theater of hospital — Stock Photo
    Surgeons performing operation in operation theater of hospital
    Paramedics examining injured boy on street — Stock Photo
    Paramedics examining injured boy on street
    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
    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
    Crop unrecognizable medic using pulse oximeter on finger of patient for examining symptoms of COVID 19 in hospital — Stock Photo
    Crop unrecognizable medic using pulse oximeter on finger of patient for examining symptoms of COVID 19 in hospital
    Crop unrecognizable doctor measuring blood oxygen of patient with heart rate monitor at table with stethoscope in clinic while using laptop — Stock Photo
    Crop unrecognizable doctor measuring blood oxygen of patient with heart rate monitor at table with stethoscope in clinic while using laptop
    Paramedics examining injured boy on street — Stock Photo
    Paramedics examining injured boy on street
    Doctors examining senior patient with stethoscope in hospital bed — Stock Photo
    Doctors examining senior patient with stethoscope in hospital bed
    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
    3d illustration of red blood cells erythrocytes. — Stock Photo
    3d illustration of red blood cells erythrocytes.
    View of distant small aircraft on azure heaven — Stock Photo
    View of distant small aircraft on azure heaven
    Conceptual illustration of red blood cells (erythrocytes) with oxygen molecules (white) in an artery. — Stock Photo
    Conceptual illustration of red blood cells (erythrocytes) with oxygen molecules (white) in an artery.
    Red blood cells — Stock Photo
    Red blood cells
    Scuba divers in Roatan Marine Park, West End Wall dive site; Roatan, Honduras — Stock Photo
    Scuba divers in Roatan Marine Park, West End Wall dive site; Roatan, Honduras
    Female doctor putting oxygen mask on patient face in the hospital — Stock Photo
    Female doctor putting oxygen mask on patient face in the hospital
    Close up of mixed race female doctor giving medicine to mature mixed-race female patient in the ward at hospital — Stock Photo
    Close up of mixed race female doctor giving medicine to mature mixed-race female patient in the ward at hospital
    Colored scanning electron micrograph of red blood cells. — Stock Photo
    Colored scanning electron micrograph of red blood cells.
    Astrocyte glial nerve cell, digital illustration. — Stock Photo
    Astrocyte glial nerve cell, digital illustration.
    Fluffy cat with paw in blood oxygen meter lying on medical table after operation in clinic — Stock Photo
    Fluffy cat with paw in blood oxygen meter lying on medical table after operation in clinic
    Image of firefighter next to the water truck — Stock Photo
    Image of firefighter next to the water truck
    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
    Front view of diverse female doctors interacting with mature mixed-race female patient in the ward at hospital. Female patient is looking happy. — Stock Photo
    Front view of diverse female doctors interacting with mature mixed-race female patient in the ward at hospital. Female patient is looking happy.
    Female nurse holding oxygen mask over male patient's mouth in intensive care unit — Stock Photo
    Female nurse holding oxygen mask over male patient's mouth in intensive care unit
    Little kid using inhaler in clinic during check up — Stock Photo
    Little kid using inhaler in clinic during check up
    From above content sick boy using respirator and breathing oxygen from inhaler while lying down on sofa at home — Stock Photo
    From above content sick boy using respirator and breathing oxygen from inhaler while lying down on sofa at home
    Low angle view of two surgeons holding laparoscopy equipment in operating theater — Stock Photo
    Low angle view of two surgeons holding laparoscopy equipment in operating theater
    Team of surgeons performing operation in operation theater at hospital — Stock Photo
    Team of surgeons performing operation in operation theater at hospital
    Paramedics examining injured boy on street — Stock Photo
    Paramedics examining injured boy on street
    Red blood cells flowing inside an artery — Stock Photo
    Red blood cells flowing inside an artery
    Nurse preparing nasal cannula for delivering oxygen to patient. — Stock Photo
    Nurse preparing nasal cannula for delivering oxygen to patient.
    Anesthesiologist holding oxygen mask over patients face in operating room — Stock Photo
    Anesthesiologist holding oxygen mask over patients face 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
    Underwater view of two divers wearing wetsuits, diving goggles and oxygen cylinders. — Stock Photo
    Underwater view of two divers wearing wetsuits, diving goggles and oxygen cylinders.
    Side view of crop female vet with coworker in uniform standing at medical table with cat and tools during surgery — Stock Photo
    Side view of crop female vet with coworker in uniform standing at medical table with cat and tools during surgery
    High angle view of Caucasian man comforting pregnant woman during labor while mixed-race female doctor uses respirator on patient in operation theater at hospital — Stock Photo
    High angle view of Caucasian man comforting pregnant woman during labor while mixed-race female doctor uses respirator on patient in operation theater at hospital
    Senior woman sleeping with nasal cannula and nurse in background, close-up. — Stock Photo
    Senior woman sleeping with nasal cannula and nurse in background, close-up.
    Nurse putting oxygen mask on patient in hospital — Stock Photo
    Nurse putting oxygen mask on patient in hospital
    Side view of Caucasian male patient sleeping on bed in the ward at hospital. In the background diverse doctors discussing x-ray with mixed-race male patient. — Stock Photo
    Side view of Caucasian male patient sleeping on bed in the ward at hospital. In the background diverse doctors discussing x-ray with mixed-race male patient.
    Paramedics examining injured boy on street — Stock Photo
    Paramedics examining injured boy on street
    Surgeons adjusting oxygen mask on patient in operation theater of hospital — Stock Photo
    Surgeons adjusting oxygen mask on patient in operation theater of hospital