Cientista masculino de meia-idade examinando líquido em frasco de vidro - Banco de fotos e imagens

Scientist holding small erlenmeyer flask up to the light

Male researcher holding flask with blue liquid in the lab

Young male scientist doing experiments in laboratory

Close-up of a happy male scientist

A man checking test tubes

Mature scientist contemplating dna model

He is working on dna structure

Scientist looking at test tube through a magnifying glass

Senior scientist working in lab

Male worker holding a 3d molecule in lab

Scientist in office

Mature scientist dripping reagent into test tube

Smiling scientist in a white coat and magnifying glass

Scientist with mouth-mask using pippete in lab

Man and woman in laboratory

Senior scientist smiling at the camera

Research worker doing experiments with chemical liquid at laboratory