Doctor afroamericano enfocado agregando líquido rojo en el tubo de ensayo mientras que hace análisis en laboratorio - Metraje y vídeo de stock

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

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

4K Close up of medical researcher in the lab looking at a slide under microscope

4K Close up of medical researcher in the lab looking at a slide under microscope

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

4K Close up portrait of smiling medical researcher working in the lab

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

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

Selective focus of serious african american doctor using digital tablet while sitting at workplace in laboratory

Selective focus of african american scientist using smartphone in clinical laboratory

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

Attentive african american scientist making analyzing with microscope and writing diagnosis on clipboard