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    African american senior male doctor performing nasal swab test on african american man at home. medical testing for prevention of coronavirus outbreak concept — Stock Photo
    African american senior male doctor performing nasal swab test on african american man at home. medical testing for prevention of coronavirus outbreak concept
    Boy rejecting dental treatment in dental clinic. — Stock Photo
    Boy rejecting dental treatment in dental clinic.
    Chemist child in plastic glasses with paint spots on face smelling liquid from bottle on beige background — Stock Photo
    Chemist child in plastic glasses with paint spots on face smelling liquid from bottle on beige background
    Close-up of pipetting sample into row of test tubes during experiment in laboratory. — Stock Photo
    Close-up of pipetting sample into row of test tubes during experiment in laboratory.
    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
    Agronomy specialist taking soil sample for fertility analysis. — Stock Photo
    Agronomy specialist taking soil sample for fertility analysis.
    Preteen girl breathing into peak flow meter and looking in camera. — Stock Photo
    Preteen girl breathing into peak flow meter and looking in camera.
    High school students taking exam at desks in classroom — Stock Photo
    High school students taking exam at desks in classroom
    Holding hands of female doctor and patient at table near pulsometer on blurred background — Stock Photo
    Holding hands of female doctor and patient at table near pulsometer on blurred background
    Close-up of drop of red liquid pipetted into multi-well sample tray. — Stock Photo
    Close-up of drop of red liquid pipetted into multi-well sample tray.
    Female teacher and students conducting scientific experiment, watching liquid in test tube in laboratory classroom — Stock Photo
    Female teacher and students conducting scientific experiment, watching liquid in test tube in laboratory classroom
    Asian girl with mother having eye test in clinic. — Stock Photo
    Asian girl with mother having eye test in clinic.
    Female doctor in sterile mask and blue glove using ultrasound scanner while examining cheerful pregnant woman in hospital — Stock Photo
    Female doctor in sterile mask and blue glove using ultrasound scanner while examining cheerful pregnant woman in hospital
    Modern vision test equipment and chair against white wall in optician office in clinic — Stock Photo
    Modern vision test equipment and chair against white wall in optician office in clinic
    Female researcher with micro pipette sampling into test tube. — Stock Photo
    Female researcher with micro pipette sampling into test tube.
    Young asian college students studying outdoors — Stock Photo
    Young asian college students studying outdoors
    Female chemist setting up equipment in laboratory. — Stock Photo
    Female chemist setting up equipment in laboratory.
    Optician testing a boy's eyes with optometry devices — Stock Photo
    Optician testing a boy's eyes with optometry devices
    Pipette adding a solution to a sample — Stock Photo
    Pipette adding a solution to a sample
    Young female medical worker using microscope at workplace on blurred background — Stock Photo
    Young female medical worker using microscope at workplace on blurred background
    Close up image of child hands with a pile of colorful pencils — Stock Photo
    Close up image of child hands with a pile of colorful pencils
    Optician adjusting trial frame for eye examination preteen girl. — Stock Photo
    Optician adjusting trial frame for eye examination preteen girl.
    Centrifuging blood samples in barcoded test tubes, digital illustration. — Stock Photo
    Centrifuging blood samples in barcoded test tubes, digital illustration.
    Close-up of pipetting colorful liquids into test tubes. — Stock Photo
    Close-up of pipetting colorful liquids into test tubes.
    Female scientist working with test tube — Stock Photo
    Female scientist working with test tube
    Car dealer helping man with test drive — Stock Photo
    Car dealer helping man with test drive
    Close-up of a doctor putting a PCR test swab into a tube — Stock Photo
    Close-up of a doctor putting a PCR test swab into a tube
    Petri dish with blood agar on blue background. — Stock Photo
    Petri dish with blood agar on blue background.
    Focused male college student taking test at desk in classroom — Stock Photo
    Focused male college student taking test at desk in classroom
    Contemporary professional microscope with powerful lenses placed on table in modern equipped lab — Stock Photo
    Contemporary professional microscope with powerful lenses placed on table in modern equipped lab
    Female researcher pipetting liquid in laboratory. — Stock Photo
    Female researcher pipetting liquid in laboratory.
    Medical testing microscopes and equipment in laboratory. — Stock Photo
    Medical testing microscopes and equipment in laboratory.
    Male adult engineer in water treatment plant — Stock Photo
    Male adult engineer in water treatment plant
    Single test tube with blood sample. — Stock Photo
    Single test tube with blood sample.
    Woman using a lance to take a finger prick blood sample. — Stock Photo
    Woman using a lance to take a finger prick blood sample.
    Side view of male worker examining juice in test tube at factory — Stock Photo
    Side view of male worker examining juice in test tube at factory
    Doctor using a lance to take a finger prick blood sample from a patient. — Stock Photo
    Doctor using a lance to take a finger prick blood sample from a patient.
    Empty and sterile phials in red plastic box. — Stock Photo
    Empty and sterile phials in red plastic box.
    Eye examination of woman with slit lamp. — Stock Photo
    Eye examination of woman with slit lamp.
    Bioarcheology scientists analyzing human skull in DNA archaeology lab. — Stock Photo
    Bioarcheology scientists analyzing human skull in DNA archaeology lab.
    Female engineer in clean suit using equipment in fiber optics research and testing laboratory — Stock Photo
    Female engineer in clean suit using equipment in fiber optics research and testing laboratory
    Female scientists working in laboratory. — Stock Photo
    Female scientists working in laboratory.
    Laboratory assistant holding test tube, close-up. — Stock Photo
    Laboratory assistant holding test tube, close-up.
    Optometry devices closeup view — Stock Photo
    Optometry devices closeup view
    Plant seedling in soil in Petri dish in laboratory. — Stock Photo
    Plant seedling in soil in Petri dish in laboratory.
    Ophthalmologist examining female patient with slit lamp in clinic. — Stock Photo
    Ophthalmologist examining female patient with slit lamp in clinic.
    Researcher hand selecting labelled test tubes with blood samples. — Stock Photo
    Researcher hand selecting labelled test tubes with blood samples.
    Protection against coronavirus. Alternative fabric mask. Man with different type of masks. — Stock Photo
    Protection against coronavirus. Alternative fabric mask. Man with different type of masks.
    Scientist hand holding micro-centrifuge tube containing biological sample. — Stock Photo
    Scientist hand holding micro-centrifuge tube containing biological sample.
    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
    Spirometry. Using digital spirometer with smart phone app, testing lungs. — Stock Photo
    Spirometry. Using digital spirometer with smart phone app, testing lungs.
    Modern vision test equipment and chair against white wall in optician office in clinic — Stock Photo
    Modern vision test equipment and chair against white wall in optician office in clinic
    Chemist holding vial in pharmaceutical laboratory. — Stock Photo
    Chemist holding vial in pharmaceutical laboratory.
    Close-up of human blood and various hiv samples in test tubes while screening in medical lab. — Stock Photo
    Close-up of human blood and various hiv samples in test tubes while screening in medical lab.
    From above of crop unrecognizable scientist with sample tubes in rack against centrifugal machine in cannabis laboratory — Stock Photo
    From above of crop unrecognizable scientist with sample tubes in rack against centrifugal machine in cannabis laboratory
    Boy does homework near father working — Stock Photo
    Boy does homework near father working
    Young asian college students studying together — Stock Photo
    Young asian college students studying together
    Blood test kit and and analysis results — Stock Photo
    Blood test kit and and analysis results
    Close-up of optometrist examining patient eyes with eye test equipment in clinic — Stock Photo
    Close-up of optometrist examining patient eyes with eye test equipment in clinic
    Rack of test tubes with blood samples on blue background. — Stock Photo
    Rack of test tubes with blood samples on blue background.