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    Rack of test tubes with blood samples on blue background. — Stock Photo
    Rack of test tubes with blood samples on blue background.
    Row of transparent flasks with pink liquid reflected in glass table in biological laboratory on daytime — Stock Photo
    Row of transparent flasks with pink liquid reflected in glass table in biological laboratory on daytime
    Close-up of doctor holding prepared influenza nasal vaccine. — Stock Photo
    Close-up of doctor holding prepared influenza nasal vaccine.
    Petri dish with bacteria — Stock Photo
    Petri dish with bacteria
    Blood samples in test tubes — Stock Photo
    Blood samples in test tubes
    Pile of filled medical tesing tubes — Stock Photo
    Pile of filled medical tesing tubes
    Stacked agar plates with microbiological cultures on plain background. — Stock Photo
    Stacked agar plates with microbiological cultures on plain background.
    Group of laboratory test tubes. — Stock Photo
    Group of laboratory test tubes.
    Numbered test tubes with red liquid for biological research. — Stock Photo
    Numbered test tubes with red liquid for biological research.
    Centrifuging blood samples in barcoded test tubes, digital illustration. — Stock Photo
    Centrifuging blood samples in barcoded test tubes, digital illustration.
    Female biologist in white coat pouring water in soil sample. — Stock Photo
    Female biologist in white coat pouring water in soil sample.
    Scientist hand holding micro-centrifuge tube containing biological sample. — Stock Photo
    Scientist hand holding micro-centrifuge tube containing biological sample.
    Bacterial colonies on agar plate. — Stock Photo
    Bacterial colonies on agar plate.
    Close-up of scientist pipetting sample into eppendorf tube during experiment in laboratory. — Stock Photo
    Close-up of scientist pipetting sample into eppendorf tube during experiment in laboratory.
    Tube with blood sample on metal tray in laboratory, close-up. — Stock Photo
    Tube with blood sample on metal tray in laboratory, close-up.
    Close-up of pipetting sample into multiwell plate for analysis in laboratory. — Stock Photo
    Close-up of pipetting sample into multiwell plate for analysis in laboratory.
    Close-up of doctor holding prepared influenza nasal vaccine. — Stock Photo
    Close-up of doctor holding prepared influenza nasal vaccine.