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    Nurse adjusting controls on ventilator attached to unconscious patient. — Stock Photo
    Nurse adjusting controls on ventilator attached to unconscious patient.
    Preteen boy undergoing lung function test with female nurse. — Stock Photo
    Preteen boy undergoing lung function test with female nurse.
    Scientist pipetting liquid into Eppendorf tubes. — Stock Photo
    Scientist pipetting liquid into Eppendorf tubes.
    Pipette placing sample into test tube during experiment in laboratory. — Stock Photo
    Pipette placing sample into test tube during experiment in laboratory.
    Dentist performing dental treatment on young girl. — Stock Photo
    Dentist performing dental treatment on young girl.
    Close-up of vital signs on monitor in intensive care ward. — Stock Photo
    Close-up of vital signs on monitor in intensive care ward.
    Close-up of microtubes with red liquid. — Stock Photo
    Close-up of microtubes with red liquid.
    Nurse adjusting controls on ventilator attached to unconscious patient. — Stock Photo
    Nurse adjusting controls on ventilator attached to unconscious patient.
    Close-up of external filter for treatment of patient with kidney failure. — Stock Photo
    Close-up of external filter for treatment of patient with kidney failure.
    Standardized volume pipettes with bulbs, close-up. — Stock Photo
    Standardized volume pipettes with bulbs, close-up.
    Dentist making injection in gum of young girl. — Stock Photo
    Dentist making injection in gum of young girl.
    Close-up of ventilator machine controls. — Stock Photo
    Close-up of ventilator machine controls.
    Pipette placing sample into test tube during experiment in laboratory. — Stock Photo
    Pipette placing sample into test tube during experiment in laboratory.
    Preteen boy undergoing lung function test with female nurse. — Stock Photo
    Preteen boy undergoing lung function test with female nurse.
    Close-up of ventilator beside unconscious man in hospital intensive care ward. — Stock Photo
    Close-up of ventilator beside unconscious man in hospital intensive care ward.
    Close-up of microtubes with red liquid and person fingers. — Stock Photo
    Close-up of microtubes with red liquid and person fingers.
    Close-up of pipetting into microtubes. — Stock Photo
    Close-up of pipetting into microtubes.
    Nurse adjusting controls on ventilator attached to unconscious patient. — Stock Photo
    Nurse adjusting controls on ventilator attached to unconscious patient.
    Close-up of external filter for treatment of patient with kidney failure. — Stock Photo
    Close-up of external filter for treatment of patient with kidney failure.
    Preteen boy undergoing lung function test with female nurse. — Stock Photo
    Preteen boy undergoing lung function test with female nurse.
    Close-up of external filter for treatment of patient with kidney failure. — Stock Photo
    Close-up of external filter for treatment of patient with kidney failure.
    Close-up of microtubes stored in rack. — Stock Photo
    Close-up of microtubes stored in rack.
    Blood pressure gauge. close-up. — Stock Photo
    Blood pressure gauge. close-up.
    Colorful Eppendorf tubes in rack on white background. — Stock Photo
    Colorful Eppendorf tubes in rack on white background.
    Chemists working in laboratory with glassware with colorful liquids. — Stock Photo
    Chemists working in laboratory with glassware with colorful liquids.
    Close-up of external filter for treatment of patient with kidney failure. — Stock Photo
    Close-up of external filter for treatment of patient with kidney failure.
    Bags of donated blood in laboratory. — Stock Photo
    Bags of donated blood in laboratory.
    Colorful Eppendorf tubes in rack on white background. — Stock Photo
    Colorful Eppendorf tubes in rack on white background.
    Blood pressure gauge. close-up. — Stock Photo
    Blood pressure gauge. close-up.
    Dentist performing dental treatment on young girl. — Stock Photo
    Dentist performing dental treatment on young girl.
    Close-up of external filter for treatment of patient with kidney failure. — Stock Photo
    Close-up of external filter for treatment of patient with kidney failure.
    Blood pressure gauge. close-up. — Stock Photo
    Blood pressure gauge. close-up.
    Close-up of microcentrifuge tubes with biologist in background. — Stock Photo
    Close-up of microcentrifuge tubes with biologist in background.
    Close-up of microcentrifuge tubes with biologist in background. — Stock Photo
    Close-up of microcentrifuge tubes with biologist in background.
    Standardized volume pipettes with bulbs, close-up. — Stock Photo
    Standardized volume pipettes with bulbs, close-up.
    Unconscious man in intensive care ward at hospital. — Stock Photo
    Unconscious man in intensive care ward at hospital.
    Close-up of petri dishes with pipette. — Stock Photo
    Close-up of petri dishes with pipette.
    Pipette placing sample into test tube during experiment in laboratory. — Stock Photo
    Pipette placing sample into test tube during experiment in laboratory.
    Scientist closing lid of vial while laboratory testing. — Stock Photo
    Scientist closing lid of vial while laboratory testing.
    Female chemist setting up equipment in laboratory. — Stock Photo
    Female chemist setting up equipment in laboratory.
    Chemist setting up vacuum pump in pharmaceutical laboratory. — Stock Photo
    Chemist setting up vacuum pump in pharmaceutical laboratory.
    Female chemist using equipment in pharmaceutical laboratory. — Stock Photo
    Female chemist using equipment in pharmaceutical laboratory.
    Close-up of blood pressure gauge. — Stock Photo
    Close-up of blood pressure gauge.
    Close-up of blood pressure gauge. — Stock Photo
    Close-up of blood pressure gauge.
    Scientist pipetting sample into vial in laboratory. — Stock Photo
    Scientist pipetting sample into vial in laboratory.
    Pipette resting in petri dish. — Stock Photo
    Pipette resting in petri dish.
    Close-up of female scientist pipetting with multichannel pipette. — Stock Photo
    Close-up of female scientist pipetting with multichannel pipette.
    Close-up of multichannel pipette in hand of female scientist — Stock Photo
    Close-up of multichannel pipette in hand of female scientist
    Scientist pipetting samples into test tubes in laboratory. — Stock Photo
    Scientist pipetting samples into test tubes in laboratory.
    Scientist gloved hands holding micro-petri dishes. — Stock Photo
    Scientist gloved hands holding micro-petri dishes.
    Chemist setting up vacuum pump in pharmaceutical laboratory. — Stock Photo
    Chemist setting up vacuum pump in pharmaceutical laboratory.
    Scientist preparing chemical liquid in laboratory flask. — Stock Photo
    Scientist preparing chemical liquid in laboratory flask.
    Scientist preparing chemical liquid in laboratory flask. — Stock Photo
    Scientist preparing chemical liquid in laboratory flask.
    Female chemist setting up vacuum pump in laboratory, close-up — Stock Photo
    Female chemist setting up vacuum pump in laboratory, close-up
    Female chemist setting up equipment in laboratory. — Stock Photo
    Female chemist setting up equipment in laboratory.
    Chemist using nuclear magnetic resonance spectrometer in pharmaceutical laboratory. — Stock Photo
    Chemist using nuclear magnetic resonance spectrometer in pharmaceutical laboratory.
    Scientist pipetting samples into test tubes in laboratory. — Stock Photo
    Scientist pipetting samples into test tubes in laboratory.
    Scientist closing lid of vial while laboratory testing. — Stock Photo
    Scientist closing lid of vial while laboratory testing.
    Scientist pipetting samples into test tubes in laboratory. — Stock Photo
    Scientist pipetting samples into test tubes in laboratory.
    Boy sitting on hospital bed with breathing equipment. — Stock Photo
    Boy sitting on hospital bed with breathing equipment.