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    Close-up view of tubes with blood samples. — Stock Photo
    Close-up view of tubes with blood samples.
    Female scientist using pipette in laboratory — Stock Photo
    Female scientist using pipette in laboratory
    Scientist holding DNA sample in tube with autoradiograph on DNA gel. — Stock Photo
    Scientist holding DNA sample in tube with autoradiograph on DNA gel.
    Cropped view of scientist pipetting samples into microcentrifuge tubes. — Stock Photo
    Cropped view of scientist pipetting samples into microcentrifuge tubes.
    Researcher extracting blood from a vial — Stock Photo
    Researcher extracting blood from a vial
    Scientists viewing sample on glass slide under light microscope. — Stock Photo
    Scientists viewing sample on glass slide under light microscope.
    Close-up of pipette pipetting into microcentrifuge tubes in pathogenic laboratory. — Stock Photo
    Close-up of pipette pipetting into microcentrifuge tubes in pathogenic laboratory.
    Patient undergoing applanation tonometry and eye pressure test in ophthalmology clinic. — Stock Photo
    Patient undergoing applanation tonometry and eye pressure test in ophthalmology clinic.
    Laboratory technician analyzing blood samples in blood bank — Stock Photo
    Laboratory technician analyzing blood samples in blood bank
    Optician using slit lamp for eye examination preteen girl. — Stock Photo
    Optician using slit lamp for eye examination preteen girl.
    Close-up of test tube in rack at blood bank — Stock Photo
    Close-up of test tube in rack at blood bank
    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
    Robot arm with test tube. — Stock Photo
    Robot arm with test tube.
    Students examining liquids in test tube rack, conducting scientific experiment in laboratory classroom — Stock Photo
    Students examining liquids in test tube rack, conducting scientific experiment in laboratory classroom
    Blood test kit and and analysis results — Stock Photo
    Blood test kit and and analysis results
    Optometrist examining patient eyes with slit lamp in clinic — Stock Photo
    Optometrist examining patient eyes with slit lamp in clinic
    Optometrist using an ophthalmoscope during study of the eyesight of a black woman — Stock Photo
    Optometrist using an ophthalmoscope during study of the eyesight of a black woman
    Close-up of rack of sample tubes with blood for analysis. — Stock Photo
    Close-up of rack of sample tubes with blood for analysis.
    Blood samples tubes in polystyrene tray. — Stock Photo
    Blood samples tubes in polystyrene tray.
    Cell-based testing kit in bioengineering laboratory. — Stock Photo
    Cell-based testing kit in bioengineering laboratory.
    Focused male college student taking test at desk in classroom — Stock Photo
    Focused male college student taking test at desk in classroom
    Pollution control inspector taking sample of mud in field by lake. — Stock Photo
    Pollution control inspector taking sample of mud in field by lake.
    Closeup set of medical flasks with blood samples arranged in container in modern hospital laboratory — Stock Photo
    Closeup set of medical flasks with blood samples arranged in container in modern hospital laboratory
    Female scientist holding micro tube with sample in ancient DNA laboratory for ancient DNA analysis. — Stock Photo
    Female scientist holding micro tube with sample in ancient DNA laboratory for ancient DNA analysis.
    Young asian college students studying together — Stock Photo
    Young asian college students studying together
    Urine sample with test strip on white background. — Stock Photo
    Urine sample with test strip on white background.
    Side view of woman in medical uniform and mask using modern microscope to examine human cells while working in lab of modern clinic — Stock Photo
    Side view of woman in medical uniform and mask using modern microscope to examine human cells while working in lab of modern clinic
    Unrecognizable man at Surfs up ledge, Bugaboos, British Columbia, Canada. — Stock Photo
    Unrecognizable man at Surfs up ledge, Bugaboos, British Columbia, Canada.
    Scientist pouring chemical solution on test tube from bottle in lab — Stock Photo
    Scientist pouring chemical solution on test tube from bottle in lab
    Girl students conducting scientific experiment behind test tubes and bottles in laboratory classroom — Stock Photo
    Girl students conducting scientific experiment behind test tubes and bottles in laboratory classroom
    Close-up of antibiotic testing in petri dish. — Stock Photo
    Close-up of antibiotic testing in petri dish.
    Smoking cannabis by glass yellow tube closeup. Smoking culture — Stock Photo
    Smoking cannabis by glass yellow tube closeup. Smoking culture
    Medical stethoscope and cardiogram on paper on table — Stock Photo
    Medical stethoscope and cardiogram on paper on table
    Computer programmers testing virtual reality simulator glasses in office — Stock Photo
    Computer programmers testing virtual reality simulator glasses in office
    Close-up shot of doctor making laser procedure for female patient — Stock Photo
    Close-up shot of doctor making laser procedure for female patient
    Laboratory technicians working together in blood bank — Stock Photo
    Laboratory technicians working together in blood bank
    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
    Microorganisms culture growing in petri dish, full frame. — Stock Photo
    Microorganisms culture growing in petri dish, full frame.
    Young scientists doing test in laboratory with microscope, man taking notes. — Stock Photo
    Young scientists doing test in laboratory with microscope, man taking notes.
    Blood samples in test tubes — Stock Photo
    Blood samples in test tubes
    Empty PCR tubes on black background. — Stock Photo
    Empty PCR tubes on black background.
    Female scientist in clean suit with test tubes studying coronavirus — Stock Photo
    Female scientist in clean suit with test tubes studying coronavirus
    Female doctor analyzing a CRP test of a senior patient — Stock Photo
    Female doctor analyzing a CRP test of a senior patient
    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
    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.
    Optometrist examining patient eyes with slit lamp in clinic — Stock Photo
    Optometrist examining patient eyes with slit lamp in clinic
    Professor watching college students taking test in classroom — Stock Photo
    Professor watching college students taking test in classroom
    Cropped unrecognizable expert person in lab coat gloves examining samples through powerful microscope lenses while working in modern equipped laboratory — Stock Photo
    Cropped unrecognizable expert person in lab coat gloves examining samples through powerful microscope lenses while working in modern equipped laboratory
    Female agronomist taking soil sample for fertility analysis. — Stock Photo
    Female agronomist taking soil sample for fertility analysis.
    Female patient receiving a ultrasound scan on the stomach in hospital — Stock Photo
    Female patient receiving a ultrasound scan on the stomach in hospital
    Laboratory technician analyzing chemical solution in blood bank — Stock Photo
    Laboratory technician analyzing chemical solution in blood bank
    Female immunologist performing skin prick allergy testing on preschooler boy. — Stock Photo
    Female immunologist performing skin prick allergy testing on preschooler boy.
    Collage of many KN95 factor protection masks on a red background overhead view — Stock Photo
    Collage of many KN95 factor protection masks on a red background overhead view
    Back view of unrecognizable African male medics in protective uniforms taking PCR test sample from anonymous travelers in red cabins in countryside — Stock Photo
    Back view of unrecognizable African male medics in protective uniforms taking PCR test sample from anonymous travelers in red cabins in countryside
    College students taking test at desk in classroom — Stock Photo
    College students taking test at desk in classroom
    Female working at laptop with medical vials — Stock Photo
    Female working at laptop with medical vials
    Close-up of beaker, test tube rack and clipboard on table — Stock Photo
    Close-up of beaker, test tube rack and clipboard on table
    Team of scientists experimenting together in laboratory — Stock Photo
    Team of scientists experimenting together in laboratory
    Microscope and piles on Petri dishes in laboratory on blue background. — Stock Photo
    Microscope and piles on Petri dishes in laboratory on blue background.
    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