Agronom pompowania przed sadzeniem ziemniaków z nawozu, aby uzyskać duże żniwa - Materiał filmowy & wideo

Portrait of a nurse preparing for vaccination. 4K.

Beautiful lab assistant analyzing biomaterial in tubes, biochemical research

Doctor in Hospital Laboratory Wearing a Protection Suit Looking to a Tube with Blood Infected with Coronavirus

Woman wearing medical uniform testing new vaccine, analyzing liquid in tube

Cure vaccine for coronavirus. Male doctor holding syringe with nCoV Coronavirus vaccine for 2019-nCoV COVID virus. Man scientist holding syringe with drugs for injection for virus infection prevention

Close up surgeon demonstrates a large metal needle. The doctor examines medical equipment in sterile gloves. Needle for shunting of varicose veins

Beautiful lab assistant analyzing biomaterial in tubes, biochemical research

Woman wearing medical uniform testing new vaccine, analyzing liquid in tube

Female scientist studying liquid material in test tube, conducting research

Male lab assistant looking at liquid sample, experiments on household chemicals

Laboratory assistant analyzing infected flesh sample, cancer tissues, metastases

Vet lab assistant looking at meat sample in yellow liquid, swine flu analysis