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    Micropipette pipetting blood sample into Petri dish. — Stock Photo
    Micropipette pipetting blood sample into Petri dish.
    Scientist in white uniform putting on protective mask — Stock Photo
    Scientist in white uniform putting on protective mask
    Microbiological culture growing in Petri dish, close-up. — Stock Photo
    Microbiological culture growing in Petri dish, close-up.
    Pattern of cultures growing in Petri dishes on plain background. — Stock Photo
    Pattern of cultures growing in Petri dishes on plain background.
    Close-up of pipette pipetting into microcentrifuge tubes in pathogenic laboratory. — Stock Photo
    Close-up of pipette pipetting into microcentrifuge tubes in pathogenic laboratory.
    Scientist posing in protective costume in laboratory — Stock Photo
    Scientist posing in protective costume in laboratory
    Scientist walking along shelves with reagents and providing revision in lab — Stock Photo
    Scientist walking along shelves with reagents and providing revision in lab
    Female scientist examining DNA autoradiogram. — Stock Photo
    Female scientist examining DNA autoradiogram.
    Petri dishes with blood samples on plain background. — Stock Photo
    Petri dishes with blood samples on plain background.
    Close-up of DNA autoradiogram with flasks in background. — Stock Photo
    Close-up of DNA autoradiogram with flasks in background.
    Crop scientist putting on gloves at laboratory — Stock Photo
    Crop scientist putting on gloves at laboratory
    Close up scientist's hand pouring reagent in flasks while experiment — Stock Photo
    Close up scientist's hand pouring reagent in flasks while experiment
    Scientist using pipette and flask while providing research in laboratory. — Stock Photo
    Scientist using pipette and flask while providing research in laboratory.
    Stem cell cultures on weighed in laboratory. — Stock Photo
    Stem cell cultures on weighed in laboratory.
    Close-up of pipette pipetting into test tubes in pathogenic laboratory. — Stock Photo
    Close-up of pipette pipetting into test tubes in pathogenic laboratory.
    Close-up of light microscope lenses on white background. — Stock Photo
    Close-up of light microscope lenses on white background.
    Microbiological culture growing in Petri dish. — Stock Photo
    Microbiological culture growing in Petri dish.
    Molecular model of parathyroid hormone structure. — Stock Photo
    Molecular model of parathyroid hormone structure.
    Close-up of micropipette pipetting blood sample into microcentrifuge tubes. — Stock Photo
    Close-up of micropipette pipetting blood sample into microcentrifuge tubes.
    Scientist in protective wear pouring liquid in steaming flask — Stock Photo
    Scientist in protective wear pouring liquid in steaming flask
    Close-up of scientist fingers holding microcentrifuge tube with blue liquid. — Stock Photo
    Close-up of scientist fingers holding microcentrifuge tube with blue liquid.
    Racks of samples in test tubes and Petri dishes on laboratory table. — Stock Photo
    Racks of samples in test tubes and Petri dishes on laboratory table.
    Scientist pipetting liquid into Eppendorf tubes. — Stock Photo
    Scientist pipetting liquid into Eppendorf tubes.
    Blood samples for testing in microcentrifuge tubes. — Stock Photo
    Blood samples for testing in microcentrifuge tubes.
    Microcentrifuge sample tubes in styrofoam rack on blue background. — Stock Photo
    Microcentrifuge sample tubes in styrofoam rack on blue background.
    Tubes for biological test in rack on blue background. — Stock Photo
    Tubes for biological test in rack on blue background.
    Close-up of sample on red liquid in centrifuge tube. — Stock Photo
    Close-up of sample on red liquid in centrifuge tube.
    Scientist with papers standing in storage and doing revision in lab. — Stock Photo
    Scientist with papers standing in storage and doing revision in lab.
    Cell cultures under microscope in laboratory. — Stock Photo
    Cell cultures under microscope in laboratory.
    Cropped image scientist adding liquid in flask — Stock Photo
    Cropped image scientist adding liquid in flask
    Pipette placing sample into test tube during experiment in laboratory. — Stock Photo
    Pipette placing sample into test tube during experiment in laboratory.
    Close-up of pipette pipetting into test tubes in pathogenic laboratory. — Stock Photo
    Close-up of pipette pipetting into test tubes in pathogenic laboratory.
    Microscope and piles on Petri dishes in laboratory on blue background. — Stock Photo
    Microscope and piles on Petri dishes in laboratory on blue background.
    Pipette adding sample to petri dish with DNA autoradiogram in background. — Stock Photo
    Pipette adding sample to petri dish with DNA autoradiogram in background.
    Crop hands of scientist operating with equipment in laboratory. — Stock Photo
    Crop hands of scientist operating with equipment in laboratory.
    Multiwell plate with biological samples on white background. — Stock Photo
    Multiwell plate with biological samples on white background.
    Scientist putting on gloves before work in laboratory — Stock Photo
    Scientist putting on gloves before work in laboratory
    Pattern of cultures growing in Petri dishes on plain background. — Stock Photo
    Pattern of cultures growing in Petri dishes on plain background.
    Molecular model of metalloproteinase snake venom from diamondback rattlesnake. — Stock Photo
    Molecular model of metalloproteinase snake venom from diamondback rattlesnake.
    Molecular model of parathyroid hormone structure. — Stock Photo
    Molecular model of parathyroid hormone structure.
    Confident scientist man with arms crossed standing outside laboratory. — Stock Photo
    Confident scientist man with arms crossed standing outside laboratory.
    Activated Ras protein, digital illustration. — Stock Photo
    Activated Ras protein, digital illustration.
    Multichannel pipette and blue well plate in laboratory. — Stock Photo
    Multichannel pipette and blue well plate in laboratory.
    Close-up of hand using multipipette for placing DNA onto agarose gel. — Stock Photo
    Close-up of hand using multipipette for placing DNA onto agarose gel.
    Rack of test tubes with blood samples on blue background. — Stock Photo
    Rack of test tubes with blood samples on blue background.
    Close-up of rack of cell cultures in bottles in laboratory. — Stock Photo
    Close-up of rack of cell cultures in bottles in laboratory.
    Activation of Ras proteins, digital illustration. — Stock Photo
    Activation of Ras proteins, digital illustration.
    Close-up of scientist hand holding Petri dish in pathology laboratory. — Stock Photo
    Close-up of scientist hand holding Petri dish in pathology laboratory.
    Test tubes with red liquid in rack. — Stock Photo
    Test tubes with red liquid in rack.
    Close-up of pipette pipetting into test tubes in pathogenic laboratory. — Stock Photo
    Close-up of pipette pipetting into test tubes in pathogenic laboratory.
    Rack of test tubes with blood samples on blue background. — Stock Photo
    Rack of test tubes with blood samples on blue background.
    Close-up of scientist holding blood testing microtubes. — Stock Photo
    Close-up of scientist holding blood testing microtubes.
    Rack of test tubes with blood samples in laboratory. — Stock Photo
    Rack of test tubes with blood samples in laboratory.
    Molecular model of phosphodiesterase snake venom from Taiwan cobra. — Stock Photo
    Molecular model of phosphodiesterase snake venom from Taiwan cobra.
    Digital model of molecules of growth hormone somatotropin. — Stock Photo
    Digital model of molecules of growth hormone somatotropin.
    Close-up of sample on red liquid in centrifuge tube. — Stock Photo
    Close-up of sample on red liquid in centrifuge tube.
    Tubes for biological test in rack on blue background. — Stock Photo
    Tubes for biological test in rack on blue background.
    Molecular structure illustrating pure research. — Stock Photo
    Molecular structure illustrating pure research.
    Female scientist examining DNA autoradiogram. — Stock Photo
    Female scientist examining DNA autoradiogram.
    Cropped view of scientist hands pipetting sample for biological research. — Stock Photo
    Cropped view of scientist hands pipetting sample for biological research.