Retrato de hombre sonriente profesor y chica estudiante científicos mirando tubo experimental en laboratorio - Foto e imágenes de stock

Portrait of man teacher and girl student scientists making experiment in lab

Teacher girl pupil sience class over white

Children girls and teacher woman at laboratory on school chemical class

Low angle view of excited woman teacher and girl student scientists looking at experimental tube in lab

Smiling woman teacher and girl student scientists analyzing experimental liquid in tube in lab

Teacher girl pupil sience class over white

Happy adult scientists and little girl student working together in chemical lab and smiling at camera

Portrait of smiling man teacher looking at excited girl student during experiment in lab

Professional chemists in white coats inspecting test tube with reagent in lab

Portrait of smiling scientists in uniforms holding laboratory tubes

Portrait of cheerful scientist showing laboratory tubes and looking to camera

Portrait of smiling scientist in white coat and protective glasses in lab

Side view of concentrated scientists examining laboratory tube

Smiling scientist holding molecular model in laboratory, focus on foreground

Professional chemists in white coats inspecting test tubes with reagents in lab

Woman scientist in protective goggles holding flask with reagent and pipette in lab