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    Person hand holding DNA swab and test results for forensic evidence. — Stock Photo
    Person hand holding DNA swab and test results for forensic evidence.
    Close-up of laboratory technician holding tube with blood sample in gloved hand. — Stock Photo
    Close-up of laboratory technician holding tube with blood sample in gloved hand.
    Close-up of doctor holding prepared influenza nasal vaccine. — Stock Photo
    Close-up of doctor holding prepared influenza nasal vaccine.
    Preschooler boy undergoing logic test with numbers for developmental psychology test in female psychologist office. — Stock Photo
    Preschooler boy undergoing logic test with numbers for developmental psychology test in female psychologist office.
    Scientist pipetting sample into tube for analytical testing in laboratory. — Stock Photo
    Scientist pipetting sample into tube for analytical testing in laboratory.
    Scientist pipetting samples into test tubes in laboratory. — Stock Photo
    Scientist pipetting samples into test tubes in laboratory.
    Researchers hand mixing solution — Stock Photo
    Researchers hand mixing solution
    Teenage girl holding clipboard while practicing experiment in lab — Stock Photo
    Teenage girl holding clipboard while practicing experiment in lab
    Close-up of test tube in rack at blood bank — Stock Photo
    Close-up of test tube in rack at blood bank
    College students taking test at desks in classroom — Stock Photo
    College students taking test at desks in classroom
    Asian family with kid testing car at showroom — Stock Photo
    Asian family with kid testing car at showroom
    Physician measuring body fat on biceps using skinfold thickness test on male athlete. — Stock Photo
    Physician measuring body fat on biceps using skinfold thickness test on male athlete.
    Female patient undergoing an x-ray test in the hospital — Stock Photo
    Female patient undergoing an x-ray test in the hospital
    Female students watching mentor conducting experiment in lab — Stock Photo
    Female students watching mentor conducting experiment in lab
    Laboratory worker pipetting liquid into microcentrifuge tube. — Stock Photo
    Laboratory worker pipetting liquid into microcentrifuge tube.
    Female scientist in white coat taking notes in soil testing laboratory. — Stock Photo
    Female scientist in white coat taking notes in soil testing laboratory.
    Female patient receiving a ultrasound scan on the stomach in hospital — Stock Photo
    Female patient receiving a ultrasound scan on the stomach in hospital
    Scientist putting on gloves before work at laboratory — Stock Photo
    Scientist putting on gloves before work at laboratory
    Variety of potential drugs in pharmaceutical vials and test tubes. — Stock Photo
    Variety of potential drugs in pharmaceutical vials and test tubes.
    Close-up of hand adjusting tap on burette tube in pharmaceutical laboratory. — Stock Photo
    Close-up of hand adjusting tap on burette tube in pharmaceutical laboratory.
    Crop of anonymous male chemist putting sample tubes in centrifugal machine in cannabis lab — Stock Photo
    Crop of anonymous male chemist putting sample tubes in centrifugal machine in cannabis lab
    Hands of an unrecognizable female doctor holding a coronavirus vaccine vial — Stock Photo
    Hands of an unrecognizable female doctor holding a coronavirus vaccine vial
    Close-up of scientist pipetting sample into eppendorf tube during experiment in laboratory. — Stock Photo
    Close-up of scientist pipetting sample into eppendorf tube during experiment in laboratory.
    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.
    Male doctor examining patient in hospital — Stock Photo
    Male doctor examining patient in hospital
    Senior woman undergoing an x-ray test in hospital — Stock Photo
    Senior woman undergoing an x-ray test in hospital
    Female agronomist taking notes in field of soil. — Stock Photo
    Female agronomist taking notes in field of soil.
    Female doctor performing allergy skin prick test on little boy with mother in immunologist office. — Stock Photo
    Female doctor performing allergy skin prick test on little boy with mother in immunologist office.
    Dried marijuana flower buds on table with analytical balance and moisture measuring device in lab — Stock Photo
    Dried marijuana flower buds on table with analytical balance and moisture measuring device in lab
    Optician adjusting trial frame for eye examination preteen girl. — Stock Photo
    Optician adjusting trial frame for eye examination preteen girl.
    Agronomist putting soil with garden shovel in soil sample bag. — Stock Photo
    Agronomist putting soil with garden shovel in soil sample bag.
    Numbered test tubes with red liquid for biological research. — Stock Photo
    Numbered test tubes with red liquid for biological research.
    College students conducting scientific experiment in science laboratory classroom — Stock Photo
    College students conducting scientific experiment in science laboratory classroom
    Close-up view of medical syringes with blood sample. — Stock Photo
    Close-up view of medical syringes with blood sample.
    Sample tube with blue liquid in pink rack. — Stock Photo
    Sample tube with blue liquid in pink rack.
    Scientist holding meat piece with tweezers for food research. — Stock Photo
    Scientist holding meat piece with tweezers for food research.
    Car dealer helping man with test drive — Stock Photo
    Car dealer helping man with test drive
    Cropped image of scientists providing research with scales in laboratory. — Stock Photo
    Cropped image of scientists providing research with scales 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
    Woman in a black swimsuit — Stock Photo
    Woman in a black swimsuit
    Sliced radish in test tube, studio shot. — Stock Photo
    Sliced radish in test tube, studio shot.
    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.
    Scientist hand holding micro-centrifuge tube containing biological sample. — Stock Photo
    Scientist hand holding micro-centrifuge tube containing biological sample.
    Low angle view of scientist holding glass flask in laboratory. — Stock Photo
    Low angle view of scientist holding glass flask in laboratory.
    Dentist looking at dental x-ray plate in clinic — Stock Photo
    Dentist looking at dental x-ray plate in clinic
    Medical stethoscope near tonometer, scissors, tweezers and pen on wooden table — Stock Photo
    Medical stethoscope near tonometer, scissors, tweezers and pen on wooden table
    Ophthalmologist examining a woman's eyes with a slit lamp — Stock Photo
    Ophthalmologist examining a woman's eyes with a slit lamp
    Doctor preparing HIV test sample for testing in laboratory. — Stock Photo
    Doctor preparing HIV test sample for testing in laboratory.
    Insects in test tubes: crickets, mealworms, grasshoppers, and buffalo worms — Stock Photo
    Insects in test tubes: crickets, mealworms, grasshoppers, and buffalo worms
    Attentive laboratory technician working in blood bank — Stock Photo
    Attentive laboratory technician working in blood bank
    Microbiologist working with petri dish and test tubes in laboratory. — Stock Photo
    Microbiologist working with petri dish and test tubes in laboratory.
    Crop unrecognizable physical therapist in sterile gloves inserting needle electrode into back skin of woman in hospital — Stock Photo
    Crop unrecognizable physical therapist in sterile gloves inserting needle electrode into back skin of woman in hospital
    Scientist holding tomato piece with tweezers for food research. — Stock Photo
    Scientist holding tomato piece with tweezers for food research.
    Optician testing a boy's eyes with optometry devices — Stock Photo
    Optician testing a boy's eyes with optometry devices
    Woman getting eye exam with a phoropter in clinic — Stock Photo
    Woman getting eye exam with a phoropter in clinic
    Tests on desks in empty classroom interior — Stock Photo
    Tests on desks in empty classroom interior
    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
    Water department technician reinstalling caps on fire hydrant — Stock Photo
    Water department technician reinstalling caps on fire hydrant
    Laboratory technician using refrigerated centrifuge machine in blood bank — Stock Photo
    Laboratory technician using refrigerated centrifuge machine in blood bank
    DNA home test kit. — Stock Photo
    DNA home test kit.