Projecto científico. Sério trabalho duro inteligente segurando um tubo de teste e olhando para o microscópio enquanto trabalhava em seu projeto - Banco de fotos e imagens

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

Scientists at chemical laboratory during work

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

Close up.male scientist uses a microscope in the laboratory .science and health

Young doctor in uniform working at testing laboratory at clinic, chemical laboratory

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

Tough work. Ambitious focused male laboratorian looking in microscope while posing in profile and dressing in lab coat

Hard work. Professional appealing male laboratorian rising bulb while looking at it and wearing safety glasses and mask

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

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

Chemical research. Selective focus of test tubes with chemical liquid standing in the test tubes rack

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

Laboratory samples. Selective focus of test tubes with blue reagents being used for scientific research in the medical lab