Laboratuvarda test tüpü tutan olgun bir adamın portresi. - Stok Fotoğraf ve Görsel

Close-up of a male researcher holding flask with blue liquid

Senior scientists working in lab

Senior chemist or researcher analysis chemical laboratory

Mature male scientist examining liquid in erlenmeyer flask

Scientist looking at a test tube

Male scientist holding erlenmeyer flask partially covering his face

Mature man mixing chemical liquids

Mature lab worker conducting a chemical experiment

Man scientist holding an atom model

Senior scientist analysing flask and test-tube

Senior male researcher looking at test tubes

Close up of men pouring beer in brewery

Senior scientist at work in a laboratory

Scientist documenting the observation

Woman and man working on a new drug

Doctor checking medical laryngoscope in emergency room

Senior scientist at work in a laboratory

Man checking a liquid through a magnifying glass

Portrait of smiling senior scientists in lab