Koncentratu mężczyzna naukowiec patrząc przez Mikroskop w laboratorium - Materiał filmowy & wideo

Focused male scientist in white coat looking through microscope in laboratory

Serious doctor in glasses presenting cigarette while looking at camera and showing disapproving sign

Closeup of doctor using digital tablet and microscope

Focused male scientist in white coat looking through microscope in laboratory

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

Focused male scientist in white coat looking through microscope in laboratory

Focused male scientist in white coat looking through microscope in laboratory

Selective focus of male scientist looking through microscope in laboratory

Male scientist in white coat looking through microscope in laboratory

Selective focus of male scientist looking through microscope in laboratory

Concentrated male scientist looking through microscope in laboratory