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Male laboratory assistant holding chemical flasks.

Schoolboy examining leaves with magnifying glass in school laboratory.

Attentive male scientist experimenting in laboratory

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

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

Woman pouring hot beverage from thermal flask

Unrecognizable chemist taking blue fluid with pipette while conducting experiment in modern lab

Mountaineer standing with water bottle

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

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

Teenage girl experimenting chemical in laboratory at university

Coronavirus vaccine flask near syringe with needle on pink background

Fluid pouring into laboratory glassware.

Female scientist holding chemical flask.

Lab technician adding liquid to graduated cylinder

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

Cropped unrecognizable 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

Female laboratory assistant holding chemical flask.

Teenage girl experimenting chemical solution in laboratory

Female laboratory assistant holding chemical flask.

Vials with scientific samples arranged on glass table

Water quality inspector filling sample container with river water at pollution site.

Mountaineer in rugged terrain.

Zero waste and plastic-free kitchen utensils

Cropped unrecognizable doctor's hand holding showing coronavirus vaccine flask on pink background

Coronavirus vaccine flask near syringe with needle on pink background covered with confetti

Mountaineer filling his water bottle

Mountaineer filling water bottle

Close-up of hands of female scientist working in laboratory with pipette and flask.

Mid section of male worker experimenting gin in factory

Caucasian male worker wearing apron holding a flask and clipboard at gin distillery. alcohol production and filtration concept

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

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