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    Sliced carrot in test tube, studio shot. — Stock Photo
    Sliced carrot in test tube, studio shot.
    Scientist pipetting solution into the glass sheet at lab — Stock Photo
    Scientist pipetting solution into the glass sheet at lab
    Close-up of scientist doing experiment in lab — Stock Photo
    Close-up of scientist doing experiment in lab
    Scientist preparing samples in microcentrifuge tubes for chemical analysis. — Stock Photo
    Scientist preparing samples in microcentrifuge tubes for chemical analysis.
    Cell-based testing kit in bioengineering laboratory. — Stock Photo
    Cell-based testing kit in bioengineering laboratory.
    PCR tubes with orange and purple samples on black background. — Stock Photo
    PCR tubes with orange and purple samples on black background.
    Scientist looking at test tubes in lab — Stock Photo
    Scientist looking at test tubes in lab
    College students conducting scientific experiment in science laboratory classroom — Stock Photo
    College students conducting scientific experiment in science laboratory classroom
    Scientists doing experiment together in lab — Stock Photo
    Scientists doing experiment together in lab
    Scientist taking test tube from freezer in laboratory — Stock Photo
    Scientist taking test tube from freezer in laboratory
    Scientist using a machine for experiment in lab — Stock Photo
    Scientist using a machine for experiment in lab
    Scientist analyzing a sample in a test tube at lab — Stock Photo
    Scientist analyzing a sample in a test tube at lab
    Mid section of scientists doing experiment in lab — Stock Photo
    Mid section of scientists doing experiment in lab
    Side view of two scientists doing experiment in lab — Stock Photo
    Side view of two scientists doing experiment in lab
    Scientist using a machine for experiment in lab — Stock Photo
    Scientist using a machine for experiment in lab
    Scientist analyzing a sample at lab — Stock Photo
    Scientist analyzing a sample at lab
    Mid section of scientist analyzing a sample at lab — Stock Photo
    Mid section of scientist analyzing a sample at lab
    Scientist pipetting solution into the glass test tube at lab — Stock Photo
    Scientist pipetting solution into the glass test tube at lab
    Scientist pipetting solution into the glass test tube at lab — Stock Photo
    Scientist pipetting solution into the glass test tube at lab
    Female researcher pipetting liquid into test tube. — Stock Photo
    Female researcher pipetting liquid into test tube.
    Female college students conducting scientific experiment in science laboratory classroom — Stock Photo
    Female college students conducting scientific experiment in science laboratory classroom
    Scientist pouring chemical solution on test tube from bottle in lab — Stock Photo
    Scientist pouring chemical solution on test tube from bottle in lab
    Scientist checking a solution in test tube in lab — Stock Photo
    Scientist checking a solution in test tube in lab
    Side view of female scientist doing experiment in lab — Stock Photo
    Side view of female scientist doing experiment in lab
    Female researcher pipetting liquid in laboratory. — Stock Photo
    Female researcher pipetting liquid in laboratory.
    Scientist holding test tube with green liquid — Stock Photo
    Scientist holding test tube with green liquid
    Female researcher pipetting liquid into test tube. — Stock Photo
    Female researcher pipetting liquid into test tube.
    Overhead view of pipettes in Pipetting plate in laboratory — Stock Photo
    Overhead view of pipettes in Pipetting plate in laboratory
    Close up of rack of test tubes with solution in lab — Stock Photo
    Close up of rack of test tubes with solution in lab
    Overhead view of pipette in Pipetting plate in laboratory — Stock Photo
    Overhead view of pipette in Pipetting plate in laboratory
    Close up of rack of test tubes with solution in lab — Stock Photo
    Close up of rack of test tubes with solution in lab
    Scientist hand holding test tube containing solid fluorescent chemical glowing green. — Stock Photo
    Scientist hand holding test tube containing solid fluorescent chemical glowing green.
    Close up of pipette dropping solution into test tubes in rack in lab — Stock Photo
    Close up of pipette dropping solution into test tubes in rack in lab
    Colored solutions separated into constituent liquids in test tubes. — Stock Photo
    Colored solutions separated into constituent liquids in test tubes.
    DNA researcher pipetting into tube with reference in background. — Stock Photo
    DNA researcher pipetting into tube with reference in background.
    Rack of test tubes with blood samples in laboratory. — Stock Photo
    Rack of test tubes with blood samples in laboratory.
    Close-up of rack of cell cultures in tubes in laboratory. — Stock Photo
    Close-up of rack of cell cultures in tubes in laboratory.
    Rack of test tubes with blood samples in laboratory. — Stock Photo
    Rack of test tubes with blood samples in laboratory.
    Rack of test tubes with blood samples on blue background. — Stock Photo
    Rack of test tubes with blood samples on blue background.
    Plastic test tubes with green lids in rack. — Stock Photo
    Plastic test tubes with green lids in rack.
    Empty test tubes in red rack. — Stock Photo
    Empty test tubes in red rack.
    Three test tubes with various liquids in tube rack. — Stock Photo
    Three test tubes with various liquids in tube rack.
    Close-up of empty and sterile phials in red plastic box. — Stock Photo
    Close-up of empty and sterile phials in red plastic box.
    Empty and sterile phials in red plastic box. — Stock Photo
    Empty and sterile phials in red plastic box.
    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 pipette pipetting into microcentrifuge tubes in pathogenic laboratory. — Stock Photo
    Close-up of pipette pipetting into microcentrifuge tubes in pathogenic laboratory.
    Blood sampling vacutainer tubes in rack, close-up. — Stock Photo
    Blood sampling vacutainer tubes in rack, close-up.
    Test tubes and Petri dishes in pathogenic laboratory. — Stock Photo
    Test tubes and Petri dishes in pathogenic laboratory.
    Rack of food samples in test tubes. — Stock Photo
    Rack of food samples in test tubes.
    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 in laboratory. — Stock Photo
    Rack of test tubes with blood samples in laboratory.
    Rack of test tubes with blood samples on blue background. — Stock Photo
    Rack of test tubes with blood samples on blue background.
    Rack of test tubes with blood samples in laboratory. — Stock Photo
    Rack of test tubes with blood samples in laboratory.
    Empty and sterile phials in red plastic box. — Stock Photo
    Empty and sterile phials in red plastic box.
    Biological samples in test tubes and Petri dishes on laboratory table. — Stock Photo
    Biological samples in test tubes and Petri dishes on laboratory table.
    Plastic test tubes in rack on white background. — Stock Photo
    Plastic test tubes in rack on white background.
    Single test tube with blood sample in rack. — Stock Photo
    Single test tube with blood sample in rack.
    Close-up of scientist hand holding test tube with fluorescent chemical fluid. — Stock Photo
    Close-up of scientist hand holding test tube with fluorescent chemical fluid.
    Plastic test tubes in rack on white background. — Stock Photo
    Plastic test tubes in rack on white background.
    Close-up of pipette pipetting into test tubes in pathogenic laboratory. — Stock Photo
    Close-up of pipette pipetting into test tubes in pathogenic laboratory.