purposeful experienced chemist in protective mask and uniform working with chemical liquids in evening lab
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Scientist hand filling pipette from flask making laboratory experiment closeup. Serious lab technician putting sample under microscope
confident skilled hardworking african american male chemist viewing samples under microscope and noting results of experiment into report
Likable experienced confident responsible african american male chemist in protective mask,gloves,eyeglasses and white coat conducting chemical experiment with solutions and flasks
confident skilled adult blond woman chemist in lab coat and sterile gloves conducting chemical experiment with liquid in flask and viewing at the result obtained
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Doctor hand putting sample to microscope using medical pipette in lab close up. Experienced scientist examining medicines in advanced clinic
Good-looking concentrated skilled bearded chemist in medical uniform and gloves looking through microscope on biological samples and writing results into report
positive high-skilled bearded chemist in white coat learning samples under microscope in evening lab and looking into camera with friendly face expression
Chest up slowmo of Caucasian male chemist in lab coat and protective goggles taking smell of red liquid substance inside glass flask, conducting experiment in laboratory
Good-looking serious hardworking skilled african american male chemist in uniform and medical gloves conducting experiment with chemical liquids at late time in laboratory
Skilled scientist in protective gloves and shield adds dark blue liquid into flask with clear water doing experiment in medical lab closeup
Scientist preparing a liquid sample on a glass plate for a microscope.