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    Doctor preparing HIV test sample for testing in laboratory. — Stock Photo
    Doctor preparing HIV test sample for testing in laboratory.
    Technician hand holding blood sample ready for testing in laboratory. — Stock Photo
    Technician hand holding blood sample ready for testing in laboratory.
    Blood test kit and and analysis results — Stock Photo
    Blood test kit and and analysis results
    Female scientist holding blood samples in test tubes. — Stock Photo
    Female scientist holding blood samples in test tubes.
    Chemist hand picking samples stored in crimp neck vials in pharmaceutical laboratory. — Stock Photo
    Chemist hand picking samples stored in crimp neck vials in pharmaceutical laboratory.
    Unrecognizable female medic in mask and gloves holding tube with blood sample in modern lab in clinic — Stock Photo
    Unrecognizable female medic in mask and gloves holding tube with blood sample in modern lab in clinic
    Scientist selecting human blood sample in laboratory. — Stock Photo
    Scientist selecting human blood sample in laboratory.
    France, Limousin, triticale field, hybrid of wheat and rye, near Aubusson. — Stock Photo
    France, Limousin, triticale field, hybrid of wheat and rye, near Aubusson.
    Young male and female scientists working in laboratory. — Stock Photo
    Young male and female scientists working in laboratory.
    Water department engineer standing in chemical treatment room — Stock Photo
    Water department engineer standing in chemical treatment room
    Male college student taking test at desk in classroom — Stock Photo
    Male college student taking test at desk in classroom
    Scientist holding object with tweezers — Stock Photo
    Scientist holding object with tweezers
    Female doctor holding tube with blood sample. — Stock Photo
    Female doctor holding tube with blood sample.
    Focused high school girl student taking exam at desk in classroom — Stock Photo
    Focused high school girl student taking exam at desk in classroom
    Middle-aged woman and her doctor in an open MRI machine waiting for the test to start — Stock Photo
    Middle-aged woman and her doctor in an open MRI machine waiting for the test to start
    Optician testing a boy's eyes with optometry devices — Stock Photo
    Optician testing a boy's eyes with optometry devices
    Optician testing a boy's eyes with optometry devices — Stock Photo
    Optician testing a boy's eyes with optometry devices
    Researchers hand mixing solution — Stock Photo
    Researchers hand mixing solution
    Test tubes with urine samples for analysis, studio shot. — Stock Photo
    Test tubes with urine samples for analysis, studio shot.
    Female doctor in protective face mask taking swab test of woman in clinic during coronavirus crisis. healthcare services, illness prevention and pandemic. — Stock Photo
    Female doctor in protective face mask taking swab test of woman in clinic during coronavirus crisis. healthcare services, illness prevention and pandemic.
    Female patient undergoing an x-ray test in the hospital — Stock Photo
    Female patient undergoing an x-ray test in the hospital
    Group of laboratory test tubes. — Stock Photo
    Group of laboratory test tubes.
    Scientist holding test tubes with liquids in hand — Stock Photo
    Scientist holding test tubes with liquids in hand
    Optician testing a boy's eyes with optometry devices — Stock Photo
    Optician testing a boy's eyes with optometry devices
    Nurse applying plaster to girl hand. — Stock Photo
    Nurse applying plaster to girl hand.
    Close-up of hands of mature woman using paper strip to test blood glucose. — Stock Photo
    Close-up of hands of mature woman using paper strip to test blood glucose.
    Human brain and electrodes, brain stimulation conceptual image. — Stock Photo
    Human brain and electrodes, brain stimulation conceptual image.
    Ophthalmologist examining a womans eyes with a keratometer — Stock Photo
    Ophthalmologist examining a womans eyes with a keratometer
    Podiatrist making procedure with patient — Stock Photo
    Podiatrist making procedure with patient
    Toddler girl testing the water at edge of swimming pool — Stock Photo
    Toddler girl testing the water at edge of swimming pool
    Test tubes rack with urine samples for analysis, studio shot. — Stock Photo
    Test tubes rack with urine samples for analysis, studio shot.
    Blood samples ready for analysis — Stock Photo
    Blood samples ready for analysis
    Middle-aged woman on an open MRI machine waiting for the test to begin — Stock Photo
    Middle-aged woman on an open MRI machine waiting for the test to begin
    Close-up of tube of patient in intensive care ward. — Stock Photo
    Close-up of tube of patient in intensive care ward.
    Adult employee checking food quality in canteen — Stock Photo
    Adult employee checking food quality in canteen
    Patient undergoing CT scan test in the hospital — Stock Photo
    Patient undergoing CT scan test in the hospital
    Green seedlings in test tubes, close-up. — Stock Photo
    Green seedlings in test tubes, close-up.
    France, New Aquitaine, Arcachon Bay, La Teste de Buch, Bordes salt marsh at low tide — Stock Photo
    France, New Aquitaine, Arcachon Bay, La Teste de Buch, Bordes salt marsh at low tide
    Water treatment engineer in treatment room — Stock Photo
    Water treatment engineer in treatment room
    Female college student taking test at desk in classroom — Stock Photo
    Female college student taking test at desk in classroom
    Mature blonde woman undergoing electroencephalography monitoring. — Stock Photo
    Mature blonde woman undergoing electroencephalography monitoring.
    Young asian college students throwing paper in the air — Stock Photo
    Young asian college students throwing paper in the air
    Scientist putting on protective mask in laboratory. — Stock Photo
    Scientist putting on protective mask in laboratory.
    Blood samples in syringes on white background. — Stock Photo
    Blood samples in syringes on white background.
    Scientist pipetting solution into the glass test tube at lab — Stock Photo
    Scientist pipetting solution into the glass test tube at lab
    Female teacher and students conducting scientific experiment in laboratory classroom — Stock Photo
    Female teacher and students conducting scientific experiment in laboratory classroom
    Focused male coffee roaster testing coffee — Stock Photo
    Focused male coffee roaster testing coffee
    Pollution control inspector taking sample of mud in field by lake. — Stock Photo
    Pollution control inspector taking sample of mud in field by lake.
    Group of laboratory test tubes. — Stock Photo
    Group of laboratory test tubes.
    From above of crop anonymous student with pencil in hand working with dental model and papers during dentistry class — Stock Photo
    From above of crop anonymous student with pencil in hand working with dental model and papers during dentistry class
    Close-up shot of doctor examining belly of pregnant woman with ultrasound — Stock Photo
    Close-up shot of doctor examining belly of pregnant woman with ultrasound
    Hands of an unrecognizable female doctor holding a coronavirus vaccine vial — Stock Photo
    Hands of an unrecognizable female doctor holding a coronavirus vaccine vial
    Boy wearing headphones as playing with building blocks while hearing test, female doctor in background. — Stock Photo
    Boy wearing headphones as playing with building blocks while hearing test, female doctor in background.
    Female doctor examining a microscope in a hospital. — Stock Photo
    Female doctor examining a microscope in a hospital.
    Test tubes and baby pacifiers on plain background. — Stock Photo
    Test tubes and baby pacifiers on plain background.
    Close-up shot of surgeon with binoculars at work — Stock Photo
    Close-up shot of surgeon with binoculars at work
    Side view of cropped unrecognizable otolaryngologist in latex gloves checking throat of patient with sterile spatula and flashlight in hospital — Stock Photo
    Side view of cropped unrecognizable otolaryngologist in latex gloves checking throat of patient with sterile spatula and flashlight in hospital
    Optician testing a boy's eyes with optometry devices — Stock Photo
    Optician testing a boy's eyes with optometry devices
    Preteen girl breathing into peak flow meter and looking at nurse. — Stock Photo
    Preteen girl breathing into peak flow meter and looking at nurse.
    Male scientist in clean suit studying vial in laboratory — Stock Photo
    Male scientist in clean suit studying vial in laboratory