Attento scienziato afro-americano che effettua analisi con microscopio e diagnosi di scrittura negli appunti - Filmati e video stock

4K Close up medical researcher working in the lab looking into microscope

Selective focus of male scientist looking through microscope in laboratory

Asian scientist uses microscope and computer

Scientist wearing lab coat working in laboratory

4K Close up of medical researcher working in the lab with microscope and test tubes

Attentiive african american scientist making analyzing with microscope in laboratory

Selective focus of african american scientist in glasses using microscope with back light

Serious african american scientist making research and using dropper and petri dishes in laboratory

African american scientist in glasses using microscope and then looking at camera

Selective focus of african american scientist in glasses looking at sample through microscope in lab

Focused african american scientists making research with microscope in laboratory