Wykadrowany widok naukowca wstrząsania kolby z krwią - Materiał filmowy & wideo

Experiments on chemistry at home.Chemical reaction with the release of gas in the test tube in the boy,s hands

Scientist working at the laboratory, close-up

Cropped view of man putting on latex gloves isolated on grey, covid-19 concept

Cropped view of scientist taking blood sample on glass

Cropped view of man applying hand sanitizer isolated on white, covid-19 concept

Cropped view of man taking pill and glass of water on blue background

Selective focus of african american scientist in glasses using microscope with sunlight on background

Cropped view of african american woman using digital tablet