Mężczyzna w mundurze ochronnym przygotowuje strzykawkę z przezroczystym płynem do badania, opracowywania leków - Materiał filmowy & wideo

Medical doctor holding tube with nCoV Coronavirus vaccine for 2019-nCoV COVID virus. Male hands filling syringe with drugs for injection. Pandemic protection of the Covid-19 coronavirus

Close-up of a blurred young employee of a large research laboratory equipped with protective glasses and a mask examining a sample of a new cold vaccine on glass. Virology and new drugs concept

A young woman doctor or nurse fills a syringe with liquid for injection. Concept-medicine

A drop of liquid falls from the tube of a glass heat-resistant water-measuring water-proof tube into a transparent vessel. Girl examines a test tube with biomaterial. Young woman in protective

A drop of blue liquid falls into a transparent vessel from a glass tube of a heat-resistant water-measuring water-indicating device. Young woman in protective clothing. On the face of a protective

A doctor or scientist in laboratory holding a syringe with liquid vaccines for children or older adults, or cure animal diseases. Concept:diseases,medical care,science, anesthesia,euthanasia,diabetes.

Male doctor in protective uniform preparing syringe with vaccine for experiment, new medication development

Female doctor in lab coat, medical glasses, hat and rubber gloves standing in studio with white background and holding test tube with blood. Test for new epidemic of coronavirus.

Doctor in protective mask preparing injection for lady patient, flu vaccination, epidemics

Male doctor in protective mask preparing syringe with vaccine for young female patient, disease prevention

Portrait of handsome bearded doctor in medical clothing and blue rubber gloves putting on protective mask and looking at camera. Competent specialist posing in studio with white background.

Confident female doctor in protective uniform sitting at table, holding test tube with blood and writing information in clipboard. Concept of coronavirus and diagnostic