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    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
    Scenic view of scuba diver swimming under water — Stock Photo
    Scenic view of scuba diver swimming under water
    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
    Female doctor putting oxygen mask on patient face in the hospital — Stock Photo
    Female doctor putting oxygen mask on patient face in the hospital
    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
    Cancer cells with blood vessel formation — Stock Photo
    Cancer cells with blood vessel formation
    Crop unrecognizable veterinarian measuring pulse of cat with blood oxygen meter during operation in clinic — Stock Photo
    Crop unrecognizable veterinarian measuring pulse of cat with blood oxygen meter during operation in clinic
    Front view of beautiful mixed-race female doctor in hijab giving medicine to mixed-race female patient in the ward at hospital. — Stock Photo
    Front view of beautiful mixed-race female doctor in hijab giving medicine to mixed-race female patient in the ward at hospital.
    Mount Nuptse Everest Himalaya Nepal — Stock Photo
    Mount Nuptse Everest Himalaya Nepal
    Doctors examining patient in corridor at hospital — Stock Photo
    Doctors examining patient in corridor at hospital
    3d illustration of red blood cells erythrocytes. — Stock Photo
    3d illustration of red blood cells erythrocytes.
    Nurse giving oxygen to newborn baby. — Stock Photo
    Nurse giving oxygen to newborn baby.
    Close up of a person putting a pulse oximeter on their finger. — Stock Photo
    Close up of a person putting a pulse oximeter on their finger.
    Boy using nebulizer to treat asthma. — Stock Photo
    Boy using nebulizer to treat asthma.
    Ward boy pushing senior patient on stretcher in hospital corridor — Stock Photo
    Ward boy pushing senior patient on stretcher in hospital corridor
    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
    Paramedic giving oxygen to injured girl at accident spot — Stock Photo
    Paramedic giving oxygen to injured girl at accident spot
    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
    Anesthesiologist holding oxygen mask over patient during surgery — Stock Photo
    Anesthesiologist holding oxygen mask over patient during surgery
    Crop unrecognizable 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
    Crop unrecognizable loving mother with infrared thermometer measuring temperature of boy breathing in oxygen mask during inhalation procedure and watching cartoon on tablet at home
    African american senior woman sitting on wheelchair with oxygen mask at home. healthcare and lifestyle during covid 19 pandemic. — Stock Photo
    African american senior woman sitting on wheelchair with oxygen mask at home. healthcare and lifestyle during covid 19 pandemic.
    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.
    Doctors pushing emergency stretcher bed in corridor at hospital — Stock Photo
    Doctors pushing emergency stretcher bed in corridor at hospital
    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
    Group of surgeons performing operation in operation room at hospital — Stock Photo
    Group of surgeons performing operation in operation room at hospital
    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
    Nurse putting oxygen mask on patient in hospital — Stock Photo
    Nurse putting oxygen mask on patient in hospital
    Surgeon holding oxygen mask in operation room at hospital — Stock Photo
    Surgeon holding oxygen mask in operation room at hospital
    Close-up of senior patient wearing oxygen mask lying on hospital bed — Stock Photo
    Close-up of senior patient wearing oxygen mask lying on hospital bed
    Doctors pushing emergency stretcher bed in corridor at hospital — Stock Photo
    Doctors pushing emergency stretcher bed in corridor at hospital
    Doctor and ward boy pushing senior patient on stretcher in hospital corridor — Stock Photo
    Doctor and ward boy pushing senior patient on stretcher in hospital corridor
    Close up of doctor wearing surgical gloves, holding oxygen mask over patient in operating theater — Stock Photo
    Close up of doctor wearing surgical gloves, holding oxygen mask over patient in operating theater
    Pilot in mask operating airplane during flight — Stock Photo
    Pilot in mask operating airplane 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.
    Female doctor putting oxygen mask on patient face in the hospital — Stock Photo
    Female doctor putting oxygen mask on patient face in the hospital
    Paramedic giving oxygen to injured girl at accident spot — Stock Photo
    Paramedic giving oxygen to injured girl at accident spot
    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
    Attentive male scientist working in laboratory — Stock Photo
    Attentive male scientist working in laboratory
    Doctor hand putting oxygen mask on patient in hospital — Stock Photo
    Doctor hand putting oxygen mask on patient in hospital
    Measuring oxygen levels in blood with pulse oximeter. — Stock Photo
    Measuring oxygen levels in blood with pulse oximeter.
    Group of surgeons performing operation in operation room at hospital — Stock Photo
    Group of surgeons performing operation in operation room at hospital
    Close-up of iv drip bottle next to the patients bed in hospital room — Stock Photo
    Close-up of iv drip bottle next to the patients bed in hospital room
    3d illustration of red blood cells erythrocytes. — Stock Photo
    3d illustration of red blood cells erythrocytes.
    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
    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
    Top view of crop unrecognizable doctor measuring blood oxygen of patient with heart rate monitor at table with stethoscope in clinic — Stock Photo
    Top view of crop unrecognizable doctor measuring blood oxygen of patient with heart rate monitor at table with stethoscope in clinic
    Paramedics examining injured boy on street — Stock Photo
    Paramedics examining injured boy on street
    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
    Female doctor putting oxygen mask on patient face in the hospital — Stock Photo
    Female doctor putting oxygen mask on patient face in the hospital
    Paramedics examining injured boy on street — Stock Photo
    Paramedics examining injured boy on street
    Paramedic giving oxygen to injured girl at accident spot — Stock Photo
    Paramedic giving oxygen to injured girl at accident spot
    Doctor and nurse pushing senior patient on stretcher in hospital corridor — Stock Photo
    Doctor and nurse pushing senior patient on stretcher in hospital corridor
    Doctor and paramedics examining a patient in emergency room at hospital — Stock Photo
    Doctor and paramedics examining a patient in emergency room at hospital
    Senior patient with oxygen mask in hospital — Stock Photo
    Senior patient with oxygen mask in hospital
    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
    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
    Female doctor putting oxygen mask on patient face in the hospital — Stock Photo
    Female doctor putting oxygen mask on patient face in the hospital
    Doctor, nurse and paramedics examining patient on stretcher — Stock Photo
    Doctor, nurse and paramedics examining patient on stretcher
    Doctors pushing emergency stretcher bed in corridor at hospital — Stock Photo
    Doctors pushing emergency stretcher bed in corridor at hospital