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In medical laboratory, nurse at her desk prepares instrument for testing human blood.
Hands in gloves holding COVID-19 negative specimen on test tube in the laboratory
Alcohol burner and test tube in rack,science laboratory research and development concept
Closeup of colorful liquid chemical elements and a SARS blood test on the laboratory table
Pipette and petri dish with blood test tube in a medical analysis hospital laboratory
Closeup of the vaccine in a syringe needle with COVID-19 test tubes on the table in a laboratory
View of colorful laboratory chemical liquid elements on styrofoam test tube holder
Selective focus of plastic containers filled with blood for covid 19 testes in the laboratory
Image of a modern laboratory, featuring various test tubes filled with a variety of liquids
Scientist pours liquid from a test tube and laboratory pipette into a petri dish
High angle shot of a laboratory assistant adding purple liquid in test tubes
Test tubes in clinic, pharmacy and medical research laboratory and new chemical substances
Test tubes filled with blood in check COVID-19 coronavirus laboratory doctor
High angle shot of a laboratory assistant adding purple liquid in test tubes
Closeup of an HIV positive blood test tube and chemical beakers on the table in the laboratory
Doctor with laboratory COVID-19 test kit for diagnosis coronavirus infection.
A scientist in a white coat pours liquid from a test tube into a laboratory glass
Close-up of scientist using test sample while analyzing coronavirus in laboratory
Test tubes in clinic, pharmacy and medical research laboratory and new chemical substances
Hand in glove holding positive HIV blood specimen on test tube in the laboratory
Closeup of a doctor holding an empty COVID-19 positive test tube in the laboratory
Scientist woman, laboratory and test tube with plants, research and analysis of leaves for ecology.
COVID-19 virus or Coronavirus sample blood test tube in laboratory of hospital.
Test tubes in clinic, pharmacy and medical research laboratory and new chemical substances
Young and senior chemists working together and looking at a test tube in a clinical laboratory
High angle shot of a COVID-19 negative test tube on a container in the laboratory
Closeup of a COVID-19 negative test in a tube with a syringe needle on the table in a laboratory
Test tubes in clinic, pharmacy and medical research laboratory and new chemical substances
Laboratory scientist holding blood samples in a test tube rack. Blood research
Closeup of a doctor with a latex glove holding an HIV POSITIVE test tube in the laboratory