Investigación biológica. Biólogo masculino inteligente positivo que sostiene un microscopio y toma un tubo de ensayo mientras realiza una investigación biológica - Foto e imagen de stock

Serious research. Serious nice smart scientist sitting in the lab and focusing on his work while conducting a serious research

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

Professional research. Serious smart hard working biologist sitting at the table and setting up his microscope while doing a biological research

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

Pouring down. Attractive medical worker wearing white smock and blue rubber gloves bowing head while looking at test-tube

Scientific project. Serious intelligent hard work holding a test tube and looking into the microscope while working on his project

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

My research. Serious brunette male lab assistant posing in profile while looking in microscope and studying sample

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

Difficult task. Serious skillful male lab assistant wearing mask while touching microscope and conducting research

Scientific challenge. Pleasant handsome male laboratorian dressing in safety glasses while elevating vial and gazing at it

Scientific breakthrough. Jolly gay male laboratorian wearing safety glass while cultivating plant in vial and smiling

Responsible work. Selective focus of vials standing in stand while man using microscope and wearing gloves on the background

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