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    Schoolboy examining leaves with magnifying glass in school laboratory. — Stock Photo
    Schoolboy examining leaves with magnifying glass in school laboratory.
    Female doctor in latex gloves and face shield doing heart shape gesture with hands while holding chemical liquid in glass vial in clinic during coronavirus outbreak — Stock Photo
    Female doctor in latex gloves and face shield doing heart shape gesture with hands while holding chemical liquid in glass vial in clinic during coronavirus outbreak
    Blurred unrecognizable medic in protective face shield mask and latex gloves with vial of coronavirus vaccine and syringe showing to camera while standing in hospital room — Stock Photo
    Blurred unrecognizable medic in protective face shield mask and latex gloves with vial of coronavirus vaccine and syringe showing to camera while standing in hospital room
    Schoolboy examining leaves with magnifying glass in school laboratory. — Stock Photo
    Schoolboy examining leaves with magnifying glass in school laboratory.
    Crop unrecognizable scientist with plant in plastic tube on green background in studio — Stock Photo
    Crop unrecognizable scientist with plant in plastic tube on green background in studio
    Male scientist using microscope in laboratory — Stock Photo
    Male scientist using microscope in laboratory
    Close-up of male scientist experimenting in laboratory — Stock Photo
    Close-up of male scientist experimenting in laboratory
    Hands in gloves of female scientist in laboratory shaking glass flask with dissolved samples of soil. — Stock Photo
    Hands in gloves of female scientist in laboratory shaking glass flask with dissolved samples of soil.
    Male laboratory assistant holding chemical flasks. — Stock Photo
    Male laboratory assistant holding chemical flasks.
    Scientist hand sampling water in flask for quality testing. — Stock Photo
    Scientist hand sampling water in flask for quality testing.
    Male laboratory assistant holding chemical flask. — Stock Photo
    Male laboratory assistant holding chemical flask.
    Ethnic doctor filling in syringe from bottle with vaccine preparing to vaccinate male African American patient in white background in a clinic during coronavirus outbreak — Stock Photo
    Ethnic doctor filling in syringe from bottle with vaccine preparing to vaccinate male African American patient in white background in a clinic during coronavirus outbreak
    Conical flask glassware with solution on table in science laboratory — Stock Photo
    Conical flask glassware with solution on table in science laboratory
    Crop unrecognizable scientist with plant in plastic tube on yellow background in studio — Stock Photo
    Crop unrecognizable scientist with plant in plastic tube on yellow background in studio
    Female doctor in latex gloves and face shield filling in syringe from bottle with vaccine preparing to vaccinate unrecognizable mature African American woman patient in clinic during coronavirus outbreak — Stock Photo
    Female doctor in latex gloves and face shield filling in syringe from bottle with vaccine preparing to vaccinate unrecognizable mature African American woman patient in clinic during coronavirus outbreak
    Hands in gloves of female scientist in laboratory shaking glass flask with dissolved samples of soil. — Stock Photo
    Hands in gloves of female scientist in laboratory shaking glass flask with dissolved samples of soil.
    Woman doing experiment in chemical laboratory. — Stock Photo
    Woman doing experiment in chemical laboratory.
    Young female scientist doing experiment with liquid in laboratory. — Stock Photo
    Young female scientist doing experiment with liquid in laboratory.
    Scientists experimenting together in laboratory — Stock Photo
    Scientists experimenting together in laboratory
    Female laboratory assistant holding chemical flask. — Stock Photo
    Female laboratory assistant holding chemical flask.
    Team of scientists experimenting together in laboratory — Stock Photo
    Team of scientists experimenting together in laboratory
    Female doctor in latex gloves and face shield standing with chemical liquid in glass vial preparing to vaccinate patient in clinic during coronavirus outbreak — Stock Photo
    Female doctor in latex gloves and face shield standing with chemical liquid in glass vial preparing to vaccinate patient in clinic during coronavirus outbreak
    Attentive female scientist experimenting in laboratory — Stock Photo
    Attentive female scientist experimenting in laboratory
    Anonymous female doctor with vaccine bottle and syringe — Stock Photo
    Anonymous female doctor with vaccine bottle and syringe
    Laboratory assistants working in lab. — Stock Photo
    Laboratory assistants working in lab.