Skilled doctor working with test tube and flask in clinic laboratory
Biologist scientist putting solution liquid in test tube
Focused blonde female doctor working with test tube and chemical solutions
Chemist filling test tubes with green liquid
Respectable gray-haired doctor-mentor holding in his hands test tube with chemical solution and comparing with test tube of female doctor-intern while another interns watching
Concentrated appealing female medical worker writing down marks during her work with flask filling of transparent liquid
Handheld tracking close up of unrecognizable scientist in white coat and gloves holding test tube filled with purple solution while colleague making notes on tablet
Doctor working in science laboratory with test tubes and chemical equipment. Chemist with lab coat and gloves holding flask filled with blood or red solution for pharmaceutical research
Filling test tube close up. Medical scientist filling test tubes with chemical liquid by pipette in laboratory. Scientific chemical research concept.
Chemical reaction. Stock footage. Small test tubes are tested with special solutions that boil.
Chemical reaction. Stock footage. Small test tubes are tested with special solutions that boil.
Scientist woman taking genetic solution from test tube with micropipette