Učitel a žák v bílé kabáty provedení experimentu v laboratoři - Stock fotografie a obrázky
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Scientists studying substances at a lab
Professional researcher holding tablet in his hand and demonstrating his result to his trainee
Cropped image of scientist mixing various reagents in big flask
Young woman scientist working in chemical laboratory and examining biochemistry lab sample. Science technology medicine research and development study concept.
Scientists working with chemicals and equipment in pharmaceuticals laborator
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