Dois cientistas em jalecos olhando para a câmera enquanto trabalham no laboratório - Banco de fotos e imagens

Smiling bearded teacher and serious little student making experiment in lab

Bearded teacher holding flask while little student looking in microscope

Teachers and little student in white coats working together in lab

Smiling bearded teacher and serious little student making experiment in lab

Concentrated attractive blonde scientist working with microscope in laboratory

Side view of teacher and student working together in laboratory

Two adult scientists and little student making experiment in chemical lab

Adorable little girl with flasks in laboratory, two scientists behind