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Close-up of scientist hand pouring reagent into flask for chemical research.

Fluid pouring into laboratory glassware.

Biotechnology female scientist working in laboratory.

Female scientist agitating yellow liquid in flask.

Attentive university student doing a chemical experiment in laboratory

$Female doctor in latex gloves and face shield filling in syringe from bottle with vaccine preparing to vaccinate unrecognizable mature African American woman patient in clinic during coronavirus outbreak — Stock Photo$

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

Team of scientists experimenting together in laboratory

Side view of male scientist experimenting in laboratory

Male photographer cleaning a lens cover with liquid in photo studio

$Cropped unrecognizable female doctor in latex gloves and face shield filling in syringe from bottle with vaccine preparing to vaccinate unrecognizable mature African American woman patient in clinic during coronavirus outbreak — Stock Photo$

Cropped unrecognizable 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

Mid section of scientists experimenting in laboratory

Close-up of scientist hand pouring reagent into flask for chemical research.

Scientific laboratory researcher making chemical experiment.

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

Scientific or medical samples on glass table

$Female doctor in latex gloves and face shield filling in syringe from bottle with vaccine preparing to vaccinate patient in clinic during coronavirus outbreak — Stock Photo$

Female doctor in latex gloves and face shield filling in syringe from bottle with vaccine preparing to vaccinate patient in clinic during coronavirus outbreak

Close-up of scientists experimenting in laboratory

Pollution control inspector in protective suit taking sample of toxic substance leaking from oil drum.

Scientist holding chemical flask

Crop unrecognizable scientist with plant in plastic tube on green background in studio

Schoolboy examining leaves with magnifying glass in school laboratory.

Schoolboy putting leaves on microscope slide in school laboratory.

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

Scientific or medical samples on glass table

Male scientist wearing protective mask and holding flask with pink liquid.

Female medic in protective face shield mask and latex gloves with vial of coronavirus vaccine and syringe showing to camera while standing in hospital room

Hands in gloves of female scientist in laboratory shaking glass flask with dissolved samples of soil.

Side view of two scientists doing experiment in lab

Close-up of scientist hand pouring reagent into flask for chemical research.

Crop anonymous scientist in protective gloves shaking blue chemical substance in flask while working in modern equipped laboratory

Close-up of male scientist experimenting in laboratory

Mid section of scientists doing experiment in lab

Close-up of male scientist experimenting in laboratory

Scientist checking a solution in conical flask at lab

Scientist pipetting solution into the glass test tube at lab

Female medic in protective face shield mask and latex gloves with vial of coronavirus vaccine showing to camera while standing in hospital room

Female photographer pouring a chemical in flask at photo studio

Anonymous female doctor with vaccine bottle and syringe

$Female doctor in latex gloves and face shield filling in syringe from bottle with vaccine preparing to vaccinate unrecognizable African American man patient in clinic during coronavirus outbreak — Stock Photo$

Female doctor in latex gloves and face shield filling in syringe from bottle with vaccine preparing to vaccinate unrecognizable African American man patient in clinic during coronavirus outbreak

Attentive female scientist experimenting in laboratory

$Doctor in latex gloves and face shield filling in syringe from bottle with vaccine preparing to vaccinate unrecognizable female African American patient in clinic during coronavirus outbreak — Stock Photo$

Doctor in latex gloves and face shield filling in syringe from bottle with vaccine preparing to vaccinate unrecognizable female African American patient in clinic during coronavirus outbreak

Female scientist agitating yellow liquid in flask.

Doctor in latex gloves and face shield filling in syringe from bottle with vaccine preparing to vaccinate unrecognizable female African American patient in clinic during coronavirus outbreak

Female doctor in latex gloves and face shield filling in syringe from bottle with vaccine preparing to vaccinate unrecognizable African American man patient 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

Close-up of female photographer checking a chemical in photo studio

Chemical flask arranged on lab machine in laboratory

Scientist pouring chemical solution on conical flask from bottle in lab

Female laboratory assistant using pipette.

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

Pollution control inspector taking sample of polluted water from spring in field.

$Crop hands of anonymous doctor in latex gloves filling in syringe from bottle with vaccine preparing to vaccinate unrecognizable male African American patient in clinic during coronavirus outbreak — Stock Photo$

Crop hands of anonymous doctor in latex gloves filling in syringe from bottle with vaccine preparing to vaccinate unrecognizable male African American patient in clinic during coronavirus outbreak

Woman working with substances in laboratory

Attentive male scientist experimenting in laboratory

Attentive university student doing a chemical experiment in laboratory

Female photographer cleaning a lens cover with liquid in photo studio

$Female doctor in latex gloves and face shield filling in syringe from bottle with vaccine preparing to vaccinate patient in clinic during coronavirus outbreak — Stock Photo$

Female doctor in latex gloves and face shield filling in syringe from bottle with vaccine preparing to vaccinate patient in clinic during coronavirus outbreak

Close-up of male scientist writing on clipboard in laboratory

Attentive university students doing a chemical experiment in laboratory

University students in chemical experiment at laboratory