Ingegneria biologica. Grave bel biologo maschio in piedi in laboratorio e guardando la provetta mentre conduceva un esperimento biologico - Foto e immagini stock

Chemical lab. Serious intelligent bearded scientist holding a test tube and studying test liquid while doing a chemical research

Attentive process. Selective focus on a test tube with a blue chemical liquid and a pipette held by a mature lab worker conducting a chemical experiment.

It is all about proportions. Waist up shot of a mature gentleman wearing a lab coat concentrating his attention on a pipette while adding a chemical liquid into a test tube.

Visit our lab. Delighted scientist keeping smile on his face and raising eyebrows while examining blue liquid

Controlled experiment. Waist up shot of an experienced laboratory worker holding a pipette while adding chemical liquid into a test tube.

Professional laboratory. Nice professional bearded scientist wearing labcoat and doing a research while working in the lab

Competent scientist. Confident practitioner looking attentively at pipette while adding some drops of reagent while waiting for reaction

Biological test sample. Selective focus of a test tube being held by a nice smart professional scientist while taking a biological test sample

Thoughtful researcher. Attentive bearded scientist wrinkling his forehead while looking at pink liquid

Close to hand. Delighted scientist opening his mouth and wearing protective glasses while looking at chemical reagent

Genius chemist. Serious smart man writing a chemical formula while standing in front of the whiteboard

Chemical expertise. Attentive mature scientist wrinkling his forehead while looking at test tube

Biological experiment. Cheerful senior man wearing glasses while doing chemical research

Accurate observation. Professional biologist working in a lab and holding a test tube