Wissenschaftliche Entwicklungen. seriöser, netter wissenschaftlicher Forscher, der sich die Reagenzgläser ansieht und eines davon nimmt, während er im Labor arbeitet - Stockfoto & -bild

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

One more drop. Close up of transparent vials and male hand wearing gloves and holding pipette for dropping reagent

Bio laboratory. Smart nice handsome scientist standing in the lab and looking at the test tube while doing a biological research

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

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

Professional biologist. Smart nice handsome man standing near the microscope and looking into it while working as a biologist in the lab