Afrikanischer Wissenschaftler in medizinischer Maske blickt auf Klemmbrett in der Nähe von Kolben und Reagenzgläsern im Labor - Stockfoto & -bild

Side view of african american scientist in medical mask holding flask near clipboard

Side view of african american scientist in safety goggles holding pipette and flask in laboratory

Close up .female scientist looking at test tube . science and public health.

African american scientist in medical mask writing on clipboard near test tubes, banner

Scientist in goggles and medical mask holding electronic pipette and test tube near microscope