保護マスクと呼吸器の女性はチューブ内の炎症性液体を示す - ストックフッテージ＆ビデオ

Female in protective uniform showing irritant liquid in tube insecticide testing

Female scientist in protective mask demonstrating dangerous liquid in tube, lab

Scientist showing biohazardous liquid to camera, deathly weapons development

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

Worker of illegal fuel lab holding in hands test tube with flammable additive

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

Female in protective uniform showing irritant liquid in tube insecticide testing

Female scientist in protective mask demonstrating dangerous liquid in tube, lab

Scientist showing biohazardous liquid to camera, deathly weapons development

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

Worker of illegal fuel lab holding in hands test tube with flammable additive

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