Selektiver Fokus eines afrikanisch-amerikanischen Wissenschaftlers in einer Brille beim Anblick einer Blutprobe im Kolben - Stock-Footage & -Video

Portrait of smiling african american doctor in glasses looking at camera

Close up view of african american scientist in glasses using microscope

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

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

Close up view of african american scientist in glasses using microscope with backlit

Cropped view of scientist taking blood sample on glass