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    Female scientist holding and analyzing human skull in ancient DNA laboratory. — Stock Photo
    Female scientist holding and analyzing human skull in ancient DNA laboratory.
    Young asian college students throwing paper in the air — Stock Photo
    Young asian college students throwing paper in the air
    Researcher in white costume looking at camera and standing with arms crossed in laboratory. — Stock Photo
    Researcher in white costume looking at camera and standing with arms crossed in laboratory.
    Researcher extracting blood from a vial — Stock Photo
    Researcher extracting blood from a vial
    Green coffee beans in test tube on white background, studio shot. — Stock Photo
    Green coffee beans in test tube on white background, studio shot.
    Optometrist adjusting the optometry equipment during study of the eyesight of a black woman — Stock Photo
    Optometrist adjusting the optometry equipment during study of the eyesight of a black woman
    Doctors examining boy teeth in dental clinic with mouth mirror. — Stock Photo
    Doctors examining boy teeth in dental clinic with mouth mirror.
    Elder man checking his arterial pressure with machine — Stock Photo
    Elder man checking his arterial pressure with machine
    Close-up of tube and syringe in hematology laboratory with scientist in background. — Stock Photo
    Close-up of tube and syringe in hematology laboratory with scientist in background.
    Doctor with test tubes in hospital — Stock Photo
    Doctor with test tubes in hospital
    School in Village of Himba tribe — Stock Photo
    School in Village of Himba tribe
    Green plants in test tubes, botanical research concept. — Stock Photo
    Green plants in test tubes, botanical research concept.
    School in Grashoek village — Stock Photo
    School in Grashoek village
    Rack of food samples in test tubes. — Stock Photo
    Rack of food samples in test tubes.
    Microbiologist working with petri dishes and test tubes in laboratory. — Stock Photo
    Microbiologist working with petri dishes and test tubes in laboratory.
    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
    Rack of test tubes with blood samples in laboratory. — Stock Photo
    Rack of test tubes with blood samples in laboratory.
    Doctor with oximeter examining little patient — Stock Photo
    Doctor with oximeter examining little patient
    Female researcher with micro pipette sampling into test tube. — Stock Photo
    Female researcher with micro pipette sampling into test tube.
    Dentist studying an x-ray before operating — Stock Photo
    Dentist studying an x-ray before operating
    Scientist pipetting samples into test tubes in laboratory. — Stock Photo
    Scientist pipetting samples into test tubes in laboratory.
    Side view of scientist providing research and operating with tablet on wall of laboratory. — Stock Photo
    Side view of scientist providing research and operating with tablet on wall of laboratory.
    Patient undergoing patch test in allergy clinic. — Stock Photo
    Patient undergoing patch test in allergy clinic.
    Urine sample container on toilet in bathroom, studio shot. — Stock Photo
    Urine sample container on toilet in bathroom, studio shot.
    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.
    Closeup view of empty laboratory beakers — Stock Photo
    Closeup view of empty laboratory beakers
    Labeled medical samples in rack, close-up. — Stock Photo
    Labeled medical samples in rack, close-up.
    Senior woman preparing DNA test kit. — Stock Photo
    Senior woman preparing DNA test kit.
    Scientist holding DNA sample in tube with autoradiograph on DNA gel. — Stock Photo
    Scientist holding DNA sample in tube with autoradiograph on DNA gel.
    Preschooler boy coloring shapes with colorful pens for developmental psychology test in psychologist office. — Stock Photo
    Preschooler boy coloring shapes with colorful pens for developmental psychology test in psychologist office.
    College students taking test at desks in classroom — Stock Photo
    College students taking test at desks in classroom
    Scientist preparing samples in microcentrifuge tubes for chemical analysis. — Stock Photo
    Scientist preparing samples in microcentrifuge tubes for chemical analysis.
    Teenage boy experimenting chemical solution in laboratory — Stock Photo
    Teenage boy experimenting chemical solution in laboratory
    Sliced radish in test tube, studio shot. — Stock Photo
    Sliced radish in test tube, studio shot.
    Ophthalmologist using auto refractometer eye examination equipment on boy in clinic. — Stock Photo
    Ophthalmologist using auto refractometer eye examination equipment on boy in clinic.
    Close-up of bar-coded agar plates for biological research. — Stock Photo
    Close-up of bar-coded agar plates for biological research.
    Close-up of antibiotic testing in petri dish. — Stock Photo
    Close-up of antibiotic testing in petri dish.
    DNA home test kit. — Stock Photo
    DNA home test kit.
    Little boy coloring shapes with colorful pens for developmental psychology test in psychologist office. — Stock Photo
    Little boy coloring shapes with colorful pens for developmental psychology test in psychologist office.
    Attentive female scientist using pipette in laboratory — Stock Photo
    Attentive female scientist using pipette in laboratory
    Unrecognizable man at Surfs up ledge, Bugaboos, British Columbia, Canada. — Stock Photo
    Unrecognizable man at Surfs up ledge, Bugaboos, British Columbia, Canada.
    Nurse holding a vial of the coronavirus vaccine and a rapid PCR test device — Stock Photo
    Nurse holding a vial of the coronavirus vaccine and a rapid PCR test device
    African American male doctor in medical glove demonstrating test tube with blood sample on white background — Stock Photo
    African American male doctor in medical glove demonstrating test tube with blood sample on white background
    Preschooler boy undergoing logic cards test for developmental psychology test in female psychologist office. — Stock Photo
    Preschooler boy undergoing logic cards test for developmental psychology test in female psychologist office.
    African American male doctor in medical glove demonstrating test tube with blood sample on white background — Stock Photo
    African American male doctor in medical glove demonstrating test tube with blood sample on white background
    Laboratory assistant holding test tube, close-up. — Stock Photo
    Laboratory assistant holding test tube, close-up.
    Doctors hands making a research in laboratory — Stock Photo
    Doctors hands making a research in laboratory
    Optometrist specialist hand picking up lenses from case with several equipment — Stock Photo
    Optometrist specialist hand picking up lenses from case with several equipment
    Colleagues checking food quality in canteen — Stock Photo
    Colleagues checking food quality in canteen
    Close-up of drop of liquid pipetted into glass bottle. — Stock Photo
    Close-up of drop of liquid pipetted into glass bottle.
    Human Platelets, computer illustration — Stock Photo
    Human Platelets, computer illustration
    Ophthalmologist examining a womans eyes with a phoropter — Stock Photo
    Ophthalmologist examining a womans eyes with a phoropter
    Senior woman doing a mailed DNA test at home. — Stock Photo
    Senior woman doing a mailed DNA test at home.
    Mid adult woman doing pin prick test on finger. — Stock Photo
    Mid adult woman doing pin prick test on finger.
    Female doctor teaching diabetic senior patient how to use glucometer — Stock Photo
    Female doctor teaching diabetic senior patient how to use glucometer
    Scientists viewing sample on glass slide under light microscope. — Stock Photo
    Scientists viewing sample on glass slide under light microscope.
    Female college students conducting scientific experiment in science laboratory classroom — Stock Photo
    Female college students conducting scientific experiment in science laboratory classroom
    Water department engineer standing in chemical treatment room — Stock Photo
    Water department engineer standing in chemical treatment room
    Computer programmers testing virtual reality simulator glasses in office — Stock Photo
    Computer programmers testing virtual reality simulator glasses in office
    Female scientists working in laboratory. — Stock Photo
    Female scientists working in laboratory.