Tests scientifiques. Gros plan d'une main de scientifique au-dessus des éprouvettes pendant le prélèvement d'un échantillon - Photo & image de stock

Scientific expertise. Top view of a test tube being taken from the rack for analysis

For the analysis. Close up of a test sample being taken from a test tube for professional biological analysis

Chemical samples. Close up of a rack with test tubes being in hands of a smart professional scientist

Close up. scientist recording the results of the study in a laboratory journal. photo with a copy-space.

Vials for science. Close up of many vials filled with red and blue liquids and placing in stand

Biological research. Close up of test samples of new vaccine being used in biological research

Chemical lab. Top view of test tubes with special samples standing in the test tube rack

Cropped photo of a male hand in a latex glove holding a disposable transfer pipette

At the medical lab. Close up of test tubes standing in the special rack while being used for medical analysis

Let me think. Competent medical worker sitting at her workplace while doing chemical research

Controlled experiment. Close up of a researcher in gloves holding a pipette while pouring a drop of a chemical liquid in one of the test tubes.

Pink liquid. Close up of female hands being in protective gloves while working with reagents