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    Patient undergoing applanation tonometry and eye pressure test in ophthalmology clinic. — Stock Photo
    Patient undergoing applanation tonometry and eye pressure test in ophthalmology clinic.
    Portrait of smiling doctor standing in x-ray room at hospital — Stock Photo
    Portrait of smiling doctor standing in x-ray room at hospital
    Young female medical worker using microscope at workplace on blurred background — Stock Photo
    Young female medical worker using microscope at workplace on blurred background
    Students conducting scientific experiment in laboratory classroom — Stock Photo
    Students conducting scientific experiment in laboratory classroom
    Female patient receiving a ultrasound scan on the stomach in hospital — Stock Photo
    Female patient receiving a ultrasound scan on the stomach in hospital
    Genetic Test. Tube and swab for DNA collection from mouth. — Stock Photo
    Genetic Test. Tube and swab for DNA collection from mouth.
    Close-up view of medical syringes with blood sample. — Stock Photo
    Close-up view of medical syringes with blood sample.
    Quartz cuvettes containing red liquid. — Stock Photo
    Quartz cuvettes containing red liquid.
    Female patient undergoing auto refractometer eye examination in ophthalmology clinic. — Stock Photo
    Female patient undergoing auto refractometer eye examination in ophthalmology clinic.
    Forensics expert collecting blood sample from crime scene. — Stock Photo
    Forensics expert collecting blood sample from crime scene.
    Optometrist examining patient eyes with autorefractors in clinic — Stock Photo
    Optometrist examining patient eyes with autorefractors in clinic
    Bacterial colonies on agar plate. — Stock Photo
    Bacterial colonies on agar plate.
    Crop anonymous competent researcher in white robe latex gloves and face mask working in modern laboratory and standing near table with assorted glassware including graduated cylinders syringes and test tubes — Stock Photo
    Crop anonymous competent researcher in white robe latex gloves and face mask working in modern laboratory and standing near table with assorted glassware including graduated cylinders syringes and test tubes
    Group of laboratory test tubes. — Stock Photo
    Group of laboratory test tubes.
    Close-up of human blood and various medical samples in test tubes while screening in medical lab. — Stock Photo
    Close-up of human blood and various medical samples in test tubes while screening in medical lab.
    Woman doing finger prick test. — Stock Photo
    Woman doing finger prick test.
    Ophthalmologist performing visual field testing at female patient. — Stock Photo
    Ophthalmologist performing visual field testing at female patient.
    Mid-section of university student doing a chemical experiment in laboratory — Stock Photo
    Mid-section of university student doing a chemical experiment in laboratory
    White mask with reusable KN95 protection index for virus protection on yellow background — Stock Photo
    White mask with reusable KN95 protection index for virus protection on yellow background
    Close-up of female hand using pen-like lancing device for prick test. — Stock Photo
    Close-up of female hand using pen-like lancing device for prick test.
    Senior woman doing a mailed DNA test at home. — Stock Photo
    Senior woman doing a mailed DNA test at home.
    School in Grashoek village — Stock Photo
    School in Grashoek village
    Dentist studying an x-ray before operating — Stock Photo
    Dentist studying an x-ray before operating
    University students looking at test results in corridor — Stock Photo
    University students looking at test results in corridor
    Computer programmers testing virtual reality simulator glasses in open plan office — Stock Photo
    Computer programmers testing virtual reality simulator glasses in open plan office
    From above of tweezers and glass flasks with plants arranged in rows on white table for biotechnological experiments — Stock Photo
    From above of tweezers and glass flasks with plants arranged in rows on white table for biotechnological experiments
    From above coronavirus negative and positive blood test near vaccine flask and syringe on blue background — Stock Photo
    From above coronavirus negative and positive blood test near vaccine flask and syringe on blue background
    Forensic scientist putting swab into sample tube. — Stock Photo
    Forensic scientist putting swab into sample tube.
    Scientist pipetting sample into micro centrifuge tubes ready for automated analysis. — Stock Photo
    Scientist pipetting sample into micro centrifuge tubes ready for automated analysis.
    Elementary age boy in ophthalmology glasses while eye examination in clinic. — Stock Photo
    Elementary age boy in ophthalmology glasses while eye examination in clinic.
    Car dealer helping woman with test drive — Stock Photo
    Car dealer helping woman with test drive
    Young male and female researchers holding dropper and test tube in laboratory. — Stock Photo
    Young male and female researchers holding dropper and test tube in laboratory.
    Laboratory technician checking invoices in blood bank — Stock Photo
    Laboratory technician checking invoices in blood bank
    Three blue single-use masks for virus protection on yellow background — Stock Photo
    Three blue single-use masks for virus protection on yellow background
    From above bottles with water samples and briefcase with chemicals placed near swimming pool during safety inspection on resort — Stock Photo
    From above bottles with water samples and briefcase with chemicals placed near swimming pool during safety inspection on resort
    Female patient undergoing auto refractometer eye examination in ophthalmology clinic. — Stock Photo
    Female patient undergoing auto refractometer eye examination in ophthalmology clinic.
    Microscope and piles on Petri dishes in laboratory on blue background. — Stock Photo
    Microscope and piles on Petri dishes in laboratory on blue background.
    Fluid pouring into laboratory glassware. — Stock Photo
    Fluid pouring into laboratory glassware.
    Reading a book. Education, Academic, Learning Reading and Exam concept. — Stock Photo
    Reading a book. Education, Academic, Learning Reading and Exam concept.
    Elderly bearded male in headphones sitting in soundproof room during audiology examination and hearing test — Stock Photo
    Elderly bearded male in headphones sitting in soundproof room during audiology examination and hearing test
    Researcher hand holding vacutainer tube in front of yellow tray. — Stock Photo
    Researcher hand holding vacutainer tube in front of yellow tray.
    Colored solutions separated into constituent liquids in test tubes. — Stock Photo
    Colored solutions separated into constituent liquids in test tubes.
    Cropped view of hands holding litmus paper in test-tube — Stock Photo
    Cropped view of hands holding litmus paper in test-tube
    Mid section of laboratory technicians holding tags in blood bank — Stock Photo
    Mid section of laboratory technicians holding tags in blood bank
    Mature doctor testing heart of male athlete on treadmill. — Stock Photo
    Mature doctor testing heart of male athlete on treadmill.
    Close up male scientist with test tube studying coronavirus vaccine — Stock Photo
    Close up male scientist with test tube studying coronavirus vaccine
    A doctor in latex gloves using finger cuff to examine blood pressure of little girl in casual yellow dress — Stock Photo
    A doctor in latex gloves using finger cuff to examine blood pressure of little girl in casual yellow dress
    DNA testing using saliva sample. — Stock Photo
    DNA testing using saliva sample.
    Variety of potential drugs in pharmaceutical vials and test tubes. — Stock Photo
    Variety of potential drugs in pharmaceutical vials and test tubes.
    Little girl having finger prick test in medical clinic. — Stock Photo
    Little girl having finger prick test in medical clinic.
    Laboratory technician using refrigerated centrifuge machine in blood bank — Stock Photo
    Laboratory technician using refrigerated centrifuge machine in blood bank
    Group of white masks fanned out with reusable KN95 protection index for virus protection on red background — Stock Photo
    Group of white masks fanned out with reusable KN95 protection index for virus protection on red background
    Colorful fruits and vegetables in test tubes, studio shot. — Stock Photo
    Colorful fruits and vegetables in test tubes, studio shot.
    Attentive senior employee writing in notebook results while adult female colleague in sterile clothes using digital device for test food quality in canteen — Stock Photo
    Attentive senior employee writing in notebook results while adult female colleague in sterile clothes using digital device for test food quality in canteen
    Insects in test tubes: crickets, mealworms, grasshoppers, and buffalo worms — Stock Photo
    Insects in test tubes: crickets, mealworms, grasshoppers, and buffalo worms
    Close-up of bar-coded agar plates for biological research. — Stock Photo
    Close-up of bar-coded agar plates for biological research.
    Agronomy technician pouring water in soil samples. — Stock Photo
    Agronomy technician pouring water in soil samples.
    Close up of a hand holding a stopwatch — Stock Photo
    Close up of a hand holding a stopwatch
    Female psychologist helping boy coloring shapes with colorful pens for developmental psychology test. — Stock Photo
    Female psychologist helping boy coloring shapes with colorful pens for developmental psychology test.
    Monitoring respiratory illness with digital spirometer. — Stock Photo
    Monitoring respiratory illness with digital spirometer.