Científico entusiasta. Feliz hombre positivo encantado con gafas protectoras y sonriendo mientras trabaja con reactivos químicos - Foto e imagen de stock

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Chemical reagent. Selective focus of test tube with blue liquid being in hands positive smart male scientist

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Closeup.successful scientist on a light background.photo with copy space

Safety glasses. Happy positive bearded scientist standing in the lab and wearing protective equipment while working there

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More samples. Merry gay male laboratorian grinning while getting vial and putting on safety glasses

No more need. Merry gay male laboratorian wearing safety glasses while smiling and looking at bulb

Successful experiment. Selective focus of male hand carried vial filled with liquid and man putting on safety glasses and grinning

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Uneasy work. Professional skillful male lab assistant using reagent while performing experiment and touching microscope

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Total concentration. Brunette professional male laboratorian working with pipette for dropping liquid in vials while they placing in stand