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    Doctor with oximeter examining little patient — Stock Photo
    Doctor with oximeter examining little patient
    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
    Paramedic giving oxygen to injured girl at accident spot — Stock Photo
    Paramedic giving oxygen to injured girl at accident spot
    Male patient with nasal cannula, portrait. — Stock Photo
    Male patient with nasal cannula, portrait.
    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.
    Caring woman using pulse oximeter on finger of ill boy in oxygen mask using nebulizer during inhalation at home — Stock Photo
    Caring woman using pulse oximeter on finger of ill boy in oxygen mask using nebulizer during inhalation at home
    Nurse preparing nasal cannula for delivering oxygen to patient. — Stock Photo
    Nurse preparing nasal cannula for delivering oxygen to patient.
    Nurse putting oxygen mask on patient in hospital — Stock Photo
    Nurse putting oxygen mask on patient in hospital
    Senior woman sleeping with nasal cannula and IV bag, close-up. — Stock Photo
    Senior woman sleeping with nasal cannula and IV bag, close-up.
    Cardiovascular system transporting nutrients and oxygen — Stock Photo
    Cardiovascular system transporting nutrients and oxygen
    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
    Doctor holding oxygen mask over male patient's mouth in intensive care unit — Stock Photo
    Doctor holding oxygen mask over male patient's mouth in intensive care unit
    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.
    Cancer cells with blood vessel formation — Stock Photo
    Cancer cells with blood vessel formation
    Front view of thoughtful mixed-race female patient lying in bed while pulse oximetry measures oxygen saturation in the blood in ward at hospital. — Stock Photo
    Front view of thoughtful mixed-race female patient lying in bed while pulse oximetry measures oxygen saturation in the blood in ward at hospital.
    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
    Hand of female doctor putting oxygen mask on patient face in the hospital — Stock Photo
    Hand of female doctor putting oxygen mask on patient face in the hospital
    Female patient with nasal cannula. — Stock Photo
    Female patient with nasal cannula.
    Surgeons adjusting oxygen mask on patient in operation theater of hospital — Stock Photo
    Surgeons adjusting oxygen mask on patient in operation theater of hospital
    Measuring oxygen saturation in blood with pulse oximeter. — Stock Photo
    Measuring oxygen saturation in blood with pulse oximeter.
    Cheerful child breathing in oxygen mask during inhalation and playing with soft toy on couch at home — Stock Photo
    Cheerful child breathing in oxygen mask during inhalation and playing with soft toy on couch at home
    Group of surgeons performing operation in operation room at hospital — Stock Photo
    Group of surgeons performing operation in operation room at hospital
    Content mother putting on oxygen mask on face of son for inhalation procedure while sitting on sofa at home — Stock Photo
    Content mother putting on oxygen mask on face of son for inhalation procedure while sitting on sofa at home
    Underwater view of diver wearing wetsuit, diving goggles and oxygen cylinder, air bubbles rising. — Stock Photo
    Underwater view of diver wearing wetsuit, diving goggles and oxygen cylinder, air bubbles rising.
    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
    Scenic view of scuba divers silhouettes swimming under water — Stock Photo
    Scenic view of scuba divers silhouettes swimming under water
    Doctor and nurse pushing senior patient on stretcher in hospital corridor — Stock Photo
    Doctor and nurse pushing senior patient on stretcher in hospital corridor
    Team of surgeons performing operation in operation theater at hospital — Stock Photo
    Team of surgeons performing operation in operation theater at hospital
    Female doctor putting oxygen mask on patient face in the hospital — Stock Photo
    Female doctor putting oxygen mask on patient face in the hospital
    3d illustration of red blood cells erythrocytes. — Stock Photo
    3d illustration of red blood cells erythrocytes.
    Landscape in the Simien Mountains National Park. View from peak Imet Gogo over the highlands, the escarpment and the lowlands of the National Park with the endemic Giant Lobelia Lobelia rhynchopetalum. Imet Gogo is the best known viewpoint in the Pa — Stock Photo
    Landscape in the Simien Mountains National Park. View from peak Imet Gogo over the highlands, the escarpment and the lowlands of the National Park with the endemic Giant Lobelia Lobelia rhynchopetalum. Imet Gogo is the best known viewpoint in the Pa
    Top view of crop unrecognizable woman using modern pulse oximeter on finger of kid for measuring oxygen level in blood — Stock Photo
    Top view of crop unrecognizable woman using modern pulse oximeter on finger of kid for measuring oxygen level in blood
    Two doctors preparing elderly patient before medical procedure — Stock Photo
    Two doctors preparing elderly patient before medical procedure
    Paramedic giving oxygen to injured girl at accident spot — Stock Photo
    Paramedic giving oxygen to injured girl at accident spot
    Snake red blood cells. Coloured scanning electron micrograph (SEM) of whole and fractured red blood cells (erythrocytes, red) in a small blood vessel of a snake — Stock Photo
    Snake red blood cells. Coloured scanning electron micrograph (SEM) of whole and fractured red blood cells (erythrocytes, red) in a small blood vessel of a snake
    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
    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.
    Scuba diver at Joe's Wall Dive Site, Belize Barrier Reef; Belize — Stock Photo
    Scuba diver at Joe's Wall Dive Site, Belize Barrier Reef; Belize
    Strand of beta DNA — Stock Photo
    Strand of beta DNA
    Doctor putting on woman resuscitation mask. — Stock Photo
    Doctor putting on woman resuscitation mask.
    Caring woman using pulse oximeter on finger of ill boy in oxygen mask using nebulizer during inhalation at home — Stock Photo
    Caring woman using pulse oximeter on finger of ill boy in oxygen mask using nebulizer during inhalation at home
    Leaf epidermis, light micrograph. Leaf epidermis has small pores, called stomata, which open up for photosynthetic gas exchange and transpiration. — Stock Photo
    Leaf epidermis, light micrograph. Leaf epidermis has small pores, called stomata, which open up for photosynthetic gas exchange and transpiration.
    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
    Scenic view of scuba divers swimming under water — Stock Photo
    Scenic view of scuba divers swimming under water
    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
    Unrecognizable medic putting on mask on face of patient while preparing for cardiac stress test in modern hospital — Stock Photo
    Unrecognizable medic putting on mask on face of patient while preparing for cardiac stress test in modern hospital
    Scenic view of scuba diver swimming under water — Stock Photo
    Scenic view of scuba diver swimming under water
    Senior woman sleeping with nasal cannula. — Stock Photo
    Senior woman sleeping with nasal cannula.
    Content sick boy using respirator and breathing oxygen from inhaler while sitting on sofa at home — Stock Photo
    Content sick boy using respirator and breathing oxygen from inhaler while sitting on sofa at home
    Male patient with nasal cannula, portrait. — Stock Photo
    Male patient with nasal cannula, portrait.
    Scenic view of female scuba diver swimming under water with fishes — Stock Photo
    Scenic view of female scuba diver swimming under water with fishes
    Doctors examining patient in corridor at hospital — Stock Photo
    Doctors examining patient in corridor at hospital
    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
    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, close-up. — Stock Photo
    Senior woman with nasal cannula and IV bag and nurse holding tray in background, close-up.
    Doctor examining pregnant woman during delivery in operating room — Stock Photo
    Doctor examining pregnant woman during delivery in operating room
    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
    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
    Astrocyte glial nerve cell, digital illustration. — Stock Photo
    Astrocyte glial nerve cell, digital illustration.