Επιλεκτική εστίαση του αρσενικού επιστήμονα κρατώντας δοκιμαστικό σωλήνα με γράμματα coronavirus - Πλάνα & Βίντεο Αρχείου

Serious doctor in mask holds test tube with label coronavirus in modern researching center laboratory closeup

Female in protective uniform showing irritant liquid in tube insecticide testing

Scientist showing biohazardous liquid to camera, deathly weapons development

Medical worker holding yellow liquid sample in test tube, analyzing urine in lab

Lab chemist checking black liquid in test tube, oil expertise, quality control

Asian scientist holding sample with coronavirus lettering and showing thumb down

Focus pull of scientist in hazmat suit holding test tube with liquid

Scientist taking selfie with test tube in laboratory

Asian scientist showing thumb down and holding test tube isolated on grey

Asian scientist looking at test tube isolated on grey

Scientist adding sample in test tube with liquid near laptop