Bardzo, uważni Naukowcy dokonali badań z mikroskopem w laboratorium - Materiał filmowy & wideo

African american scientist in glasses using microscope in lab

African american scientist in glasses writing on clipboard while looking at sample through microscope in lab

Two serious scientists talking in laboratory near table with medical glassware

Attentive scientist looking at blue liquid in test tube and writing down results in laboratory

Attractive scientist making analysis with microscope and talking in clinical laboratory

Pretty, concentrated scientist making analysis with microscope in clinical laboratory

Beautiful scientist talking while making analysis with microscope in laboratory

Attentive scientist looking at transparent liquid in test tube and writing down results in laboratory