Porträt eines Chemikers, der eine Tube mit Flüssigkeit in der Hand hält. Ermittler überprüfen Reagenzgläser. Mann trägt Schutzbrille - Stockfoto & -bild

Portrait of a chemist holding a tube with liquid. Investigator checking test tubes. Man wears protective goggles

Portrait of a chemist holding a tube with liquid. Investigator checking test tubes. Man wears protective goggles

Portrait of a chemist holding a tube with liquid. Investigator checking test tubes. Man wears protective goggles

Portrait of a chemist holding a tube with liquid. Investigator checking test tubes. Man wears protective goggles

Portrait of a chemist holding a tube with liquid. Investigator checking test tubes. Man wears protective goggles

Scientist looking at tube with blue liquid

Portrait of a chemist holding a tube with liquid. Investigator checking test tubes. Man wears protective goggles

A Chinese Asian female medical or scientific researcher or doctor with test tube & using a microscope in a laboratory

Clinician studying chemical element in laboratory