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    Overhead view of a hand with a pulse oximeter on the finger. — Stock Photo
    Overhead view of a hand with a pulse oximeter on the finger.
    High angle of crop mother using nebulizer for inhalation of boy sitting in oxygen mask on sofa — Stock Photo
    High angle of crop mother using nebulizer for inhalation of boy sitting in oxygen mask on sofa
    Scenic view of scuba divers swimming under water with fishes — Stock Photo
    Scenic view of scuba divers swimming under water with fishes
    Front view of diverse female doctors interacting with mature mixed-race female patient in the ward at hospital. Female patient is looking relieved. — Stock Photo
    Front view of diverse female doctors interacting with mature mixed-race female patient in the ward at hospital. Female patient is looking relieved.
    Side view of mixed race female doctor interacting with Caucasian male patient in the ward at hospital — Stock Photo
    Side view of mixed race female doctor interacting with Caucasian male patient in the ward at hospital
    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 doctor putting oxygen mask on patient face in the hospital — Stock Photo
    Female doctor putting oxygen mask on patient face in the hospital
    Cardiovascular system transporting nutrients and oxygen — Stock Photo
    Cardiovascular system transporting nutrients and oxygen
    Cancer cells with blood vessel formation — Stock Photo
    Cancer cells with blood vessel formation
    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
    3d illustration of red blood cell erythrocyte, white blood cell leukocyte and platelet thrombocyte. — Stock Photo
    3d illustration of red blood cell erythrocyte, white blood cell leukocyte and platelet thrombocyte.
    Surgeon holding oxygen mask in operation room at hospital — Stock Photo
    Surgeon holding oxygen mask in operation room at hospital
    Paramedics examining injured boy on street — Stock Photo
    Paramedics examining injured boy on street
    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
    Team of surgeons performing operation in operation theater at hospital — Stock Photo
    Team of surgeons performing operation in operation theater at hospital
    Scenic view of scuba divers swimming under water — Stock Photo
    Scenic view of scuba divers swimming under water
    Skin blood vessel. Coloured scanning electron micrograph (SEM) of a blood vessel (arteriole) in the dermis of the skin. In the blood vessel are red blood cells (erythrocytes, red) which carry oxygen around the body — Stock Photo
    Skin blood vessel. Coloured scanning electron micrograph (SEM) of a blood vessel (arteriole) in the dermis of the skin. In the blood vessel are red blood cells (erythrocytes, red) which carry oxygen around the body
    Patient with oxygen mask in operating room — Stock Photo
    Patient with oxygen mask in operating room
    Young woman with resuscitation mask and male hand. — Stock Photo
    Young woman with resuscitation mask and male hand.
    Doctor hand putting oxygen mask on patient in hospital — Stock Photo
    Doctor hand putting oxygen mask on patient in hospital
    Anesthesiologist holding oxygen mask over patient during surgery — Stock Photo
    Anesthesiologist holding oxygen mask over patient during surgery
    Paramedics examining injured boy on street — Stock Photo
    Paramedics examining injured boy on street
    Senior woman with nasal cannula and IV bag and nurse holding tray in background. — Stock Photo
    Senior woman with nasal cannula and IV bag and nurse holding tray in background.
    Colored scanning electron micrograph of red blood cells. — Stock Photo
    Colored scanning electron micrograph of red blood cells.
    Scenic view of scuba diver swimming under water — Stock Photo
    Scenic view of scuba diver swimming under water
    Paramedics examining injured boy on street — Stock Photo
    Paramedics examining injured boy on street
    Intensive care unit equipped with monitor corrugated tubes for oxygen and different medical tools in veterinary clinic — Stock Photo
    Intensive care unit equipped with monitor corrugated tubes for oxygen and different medical tools in veterinary clinic
    Close-up of mixed race female nurse checking the temperature of mixed-race female patient by hand in the ward at hospital — Stock Photo
    Close-up of mixed race female nurse checking the temperature of mixed-race female patient by hand in the ward at hospital
    Skin blood vessel. Coloured scanning electron micrograph (SEM) of a blood vessel (arteriole) in the dermis of the skin. In the blood vessel are red blood cells (erythrocytes, red) which carry oxygen around the body — Stock Photo
    Skin blood vessel. Coloured scanning electron micrograph (SEM) of a blood vessel (arteriole) in the dermis of the skin. In the blood vessel are red blood cells (erythrocytes, red) which carry oxygen around the body
    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
    Oxygen mask and tube on white background. — Stock Photo
    Oxygen mask and tube on 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
    Empty wheelchair with hanging oxygen mask in bedroom at home. healthcare and lifestyle during covid 19 pandemic. — Stock Photo
    Empty wheelchair with hanging oxygen mask in bedroom at home. healthcare and lifestyle during covid 19 pandemic.
    Front view of Caucasian male patient sleeping in bed in the ward at hospital — Stock Photo
    Front view of Caucasian male patient sleeping in bed in the ward at hospital
    Doctors examining patient in corridor at hospital — Stock Photo
    Doctors examining patient in corridor at hospital
    Close-up of plugs in wall in animal hospital — Stock Photo
    Close-up of plugs in wall in animal hospital
    Little kid using inhaler in clinic during check up — Stock Photo
    Little kid using inhaler in clinic during check up
    Side view unrecognizable person in silver costume with breathing apparatus and hose attached to potted plant sitting on chair in weathered abandoned house room — Stock Photo
    Side view unrecognizable person in silver costume with breathing apparatus and hose attached to potted plant sitting on chair in weathered abandoned house room
    Pine forest landscape with long shadows cast by the sun in woods — Stock Photo
    Pine forest landscape with long shadows cast by the sun in woods
    Group of surgeons performing operation in operation room at hospital — Stock Photo
    Group of surgeons performing operation in operation room at hospital
    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
    Female doctor wearing mask while anesthetizing elderly patient in hospital ward — Stock Photo
    Female doctor wearing mask while anesthetizing elderly patient in hospital ward
    Team of surgeons performing operation in operation theater at hospital — Stock Photo
    Team of surgeons performing operation in operation theater at hospital
    Paramedic giving oxygen to injured girl at accident spot — Stock Photo
    Paramedic giving oxygen to injured girl at accident spot
    Doctor putting on woman resuscitation mask. — Stock Photo
    Doctor putting on woman resuscitation mask.
    Astrocyte glial nerve cell, digital illustration. — Stock Photo
    Astrocyte glial nerve cell, digital illustration.
    Man talking on mobile phone and paramedics examining injured boy on street in background — Stock Photo
    Man talking on mobile phone and paramedics examining injured boy on street in background
    Side view of professional male aviator in oxygen mask turning switch on control console while operating contemporary aircraft during flight — Stock Photo
    Side view of professional male aviator in oxygen mask turning switch on control console while operating contemporary aircraft during flight
    Using pulse oximeter at home to test oxygen level in blood. — Stock Photo
    Using pulse oximeter at home to test oxygen level in blood.
    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.
    Red blood cells and white blood cells — Stock Photo
    Red blood cells and white blood cells
    Cancer cells with blood vessel formation — Stock Photo
    Cancer cells with blood vessel formation
    Surgeons adjusting oxygen mask on patient in operation theater of hospital — Stock Photo
    Surgeons adjusting oxygen mask on patient in operation theater of hospital
    High angle view of beautiful mixed-race female patient using digital tablet in the ward at hospital. — Stock Photo
    High angle view of beautiful mixed-race female patient using digital tablet in the ward at hospital.
    Anesthetist holding oxygen mask over patient mouth in operating room — Stock Photo
    Anesthetist holding oxygen mask over patient mouth in operating room
    Crenated red blood cells — Stock Photo
    Crenated red blood cells
    Paramedics examining injured boy on street — Stock Photo
    Paramedics examining injured boy on street
    Scenic view of female scuba diver swimming under water with fishes — Stock Photo
    Scenic view of female scuba diver swimming under water with fishes
    Surgeons performing operation in operation theater of hospital — Stock Photo
    Surgeons performing operation in operation theater of hospital
    Measuring oxygen levels in blood with pulse oximeter. — Stock Photo
    Measuring oxygen levels in blood with pulse oximeter.