Trabajando en investigación. Joven biólogo prometedor de ojos oscuros disfrutando de su tiempo mientras trabaja en investigación - Foto e imagen de stock

Joyful activity. Smiling dark-haired promising biologist enjoying doing his activity greatly while working in lab

Smiling chemist. Dark-haired young skillful chemist wearing blue uniform smiling broadly while working hard

Young assistant. Beaming promising young chemical assistant feeling very joyful while working in laboratory

Modern lab. Pleasant handsome cheerful man standing in the laboratory and looking at the test tube rack while working as an assistant there

Innovations in research. Positive nice cheerful scientist smiling and looking at the vaccine samples while working in the chemical lab

Medical developments. Handsome positive young scientist smiling and looking at the vaccine samples while working in the medical lab

Professional chemistry. Happy cheerful male chemist smiling and taking the samples while doing a chemical analysis

Portrait of a delighted nice smart scientist smiling while looking at the test tubes

Teamwork and cooperation. Professional smart scientists working together in team while looking for coronavirus treatment

Try to enjoy. Delighted dark-skinned stomatologist keeping smile on his face while examining his visitor

Work in laboratory. Charming promising young chemist feeling joyful while working in light spacious laboratory

Carrying special tools. Cheerful pleasant doctor talking to his patient distracting her attention from procedure

Observing oral cavity. Dark-skinned accurate doctor and his female patient having checkup in fully-equipped cabinet

We love science. Determined experienced researcher conducting a test and his colleague helping him

Interesting task. Delighted afro-american scientist doing a test while working in the lab

Test it. Handsome stomatologist keeping smile on his face while demonstrating the way of cleaning teeth