Vědec ukazuje biologickou tekutinu před kamerou, smrtící vývoj zbraní - Stock záběry a video

Worker of scientific lab holding test tube with biological hazard sign, harm

Female in protective uniform showing irritant liquid in tube insecticide testing

Woman in protective mask and respirator demonstrating inflammable liquid in tube

Laboratory worker in safety glasses checking meat sample in tube quality control

Diagnostics Sars-CoV-2. Beautiful girl laboratory assistant in the laboratory holds a test tube with a blood sample infected with coronovirus Covid-19.

Toxic laboratory worker studying blue fluid in test tube with harmful sign

Worker of scientific lab holding test tube with biological hazard sign, harm

Female in protective uniform showing irritant liquid in tube insecticide testing

Woman in protective mask and respirator demonstrating inflammable liquid in tube

Laboratory worker in safety glasses checking meat sample in tube quality control

Toxic laboratory worker studying blue fluid in test tube with harmful sign

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