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Biological project. Delighted nice smart biologist holding a syringe and putting blue liquid into test tubes while working on a scientific project

Safety and work. Selective focus of male hand dressing in glove taking vial filled with reagent

In the scientific lab. Selective focus of scientist hand taking out of the test tube for the research

Biological research. Positive smart male biologist holding a microscope and taking a test tube while conducting a biological research

Medical lab. Smart intelligent nice woman holding a test tube and looking at it while working in the lab

Chemical lab. Selective focus if test tubes standing on the table with a handsome professional chemist working in the background

Modern scientific research. Nice professional smart biologist standing together and looking at each other while working in the lab

Professional chemist. Smart nice male researcher wearing a mask and protective glasses while conducting chemical experiment in the lab

Blue reagent. Selective focus of glass small transparent vials putting in stand which placing on surface when girl posing on background