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    Scientist holding tomato piece with tweezers for food research. — Stock Photo
    Scientist holding tomato piece with tweezers for food research.
    Close-up of IV drip of patient in intensive care ward. — Stock Photo
    Close-up of IV drip of patient in intensive care ward.
    Close-up of tube of patient in intensive care ward. — Stock Photo
    Close-up of tube of patient in intensive care ward.
    Medical worker gloved hands holding test stick in urine sample tube. — Stock Photo
    Medical worker gloved hands holding test stick in urine sample tube.
    Close-up of vital signs of patient on monitor in intensive care ward. — Stock Photo
    Close-up of vital signs of patient on monitor in intensive care ward.
    Close-up of pipetting liquid into Eppendorf tubes. — Stock Photo
    Close-up of pipetting liquid into Eppendorf tubes.
    Female scientist holding tube with blood sample. — Stock Photo
    Female scientist holding tube with blood sample.
    Close-up of blood sample in tube and syringe. — Stock Photo
    Close-up of blood sample in tube and syringe.
    Scientist holding meat piece with tweezers for food research. — Stock Photo
    Scientist holding meat piece with tweezers for food research.
    Medical worker gloved hands holding test stick in urine sample tube. — Stock Photo
    Medical worker gloved hands holding test stick in urine sample tube.
    Colorful Eppendorf tubes in rack on white background. — Stock Photo
    Colorful Eppendorf tubes in rack on white background.
    Male patient in hospital gown sitting on bed holding urine sample container. — Stock Photo
    Male patient in hospital gown sitting on bed holding urine sample container.
    Green seedlings in test tubes, close-up. — Stock Photo
    Green seedlings in test tubes, close-up.
    Liquid nitrogen pouring into cryostorage canister. — Stock Photo
    Liquid nitrogen pouring into cryostorage canister.
    Colorful Eppendorf tubes in rack on white background. — Stock Photo
    Colorful Eppendorf tubes in rack on white background.
    Intensive care senior male patient. — Stock Photo
    Intensive care senior male patient.
    Female scientist taking testing tube from tray for scientific research. — Stock Photo
    Female scientist taking testing tube from tray for scientific research.
    Female scientist using pipette for dropping liquid into eppendorf tubes. — Stock Photo
    Female scientist using pipette for dropping liquid into eppendorf tubes.
    Close-up of scientist taking tubes in in vitro fertilisation lab. — Stock Photo
    Close-up of scientist taking tubes in in vitro fertilisation lab.
    Oxygen mask and tube on white background. — Stock Photo
    Oxygen mask and tube on white background.
    Chinese siblings wearing swimming tubes running to car with parents — Stock Photo
    Chinese siblings wearing swimming tubes running to car with parents
    Assorted disposable plastic pipette tips and sample tubes. — Stock Photo
    Assorted disposable plastic pipette tips and sample tubes.
    Chinese siblings wearing swimming tubes running to car with parents — Stock Photo
    Chinese siblings wearing swimming tubes running to car with parents
    Close-up of microcentrifuge tubes with biologist in background. — Stock Photo
    Close-up of microcentrifuge tubes with biologist in background.
    Close-up of tube and syringe in hematology laboratory with scientist in background. — Stock Photo
    Close-up of tube and syringe in hematology laboratory with scientist in background.
    Pipetting liquid into test tubes, close-up. — Stock Photo
    Pipetting liquid into test tubes, close-up.
    Close-up of microcentrifuge tubes with biologist in background. — Stock Photo
    Close-up of microcentrifuge tubes with biologist in background.
    Blood samples in centrifuge tubes on white background. — Stock Photo
    Blood samples in centrifuge tubes on white background.
    Close-up of male scientist pipetting into test tubes. — Stock Photo
    Close-up of male scientist pipetting into test tubes.
    Close-up of person hand pushing bulb of blood pressure gauge. — Stock Photo
    Close-up of person hand pushing bulb of blood pressure gauge.
    Forensic scientist putting swab into sample tube. — Stock Photo
    Forensic scientist putting swab into sample tube.
    Labelled vacutainer tubes containing blood samples, close-up. — Stock Photo
    Labelled vacutainer tubes containing blood samples, close-up.
    Close-up of sample tubes in rack. — Stock Photo
    Close-up of sample tubes in rack.
    Close-up of tube and syringe in hematology laboratory with scientist in background. — Stock Photo
    Close-up of tube and syringe in hematology laboratory with scientist in background.
    Close-up of tube and syringe in hematology laboratory with scientist in background. — Stock Photo
    Close-up of tube and syringe in hematology laboratory with scientist in background.
    Close-up of pipetting liquid into Eppendorf tubes. — Stock Photo
    Close-up of pipetting liquid into Eppendorf tubes.
    Close-up of pipetting colorful liquids into test tubes. — Stock Photo
    Close-up of pipetting colorful liquids into test tubes.
    Close-up of male scientist pipetting into test tubes. — Stock Photo
    Close-up of male scientist pipetting into test tubes.
    Unconscious man in intensive care ward at hospital. — Stock Photo
    Unconscious man in intensive care ward at hospital.
    Chemist working in laboratory with laptop and colleague in background. — Stock Photo
    Chemist working in laboratory with laptop and colleague in background.
    Close-up of laboratory technician holding tube with blood sample in gloved hand. — Stock Photo
    Close-up of laboratory technician holding tube with blood sample in gloved hand.
    Gloved hand holding blood sample in test tube. — Stock Photo
    Gloved hand holding blood sample in test tube.
    Chinese siblings wearing swimming tubes running to car with parents — Stock Photo
    Chinese siblings wearing swimming tubes running to car with parents
    Close-up of scientist hand pouring reagent into flask for chemical research. — Stock Photo
    Close-up of scientist hand pouring reagent into flask for chemical research.
    Hand of researcher holding vacutainer tube above pool of blood and syringe. — Stock Photo
    Hand of researcher holding vacutainer tube above pool of blood and syringe.
    Tube with blood sample on metal tray in laboratory, close-up. — Stock Photo
    Tube with blood sample on metal tray in laboratory, close-up.
    Young Chinese boy passing picnic basket to parents — Stock Photo
    Young Chinese boy passing picnic basket to parents
    Variety of potential drugs in pharmaceutical vials and test tubes. — Stock Photo
    Variety of potential drugs in pharmaceutical vials and test tubes.
    Researcher hand holding vacutainer tube in front of yellow tray. — Stock Photo
    Researcher hand holding vacutainer tube in front of yellow tray.
    Close-up of centrifuge with sample in tube in hands of scientists. — Stock Photo
    Close-up of centrifuge with sample in tube in hands of scientists.
    Forensic scientist putting swab into sample tube. — Stock Photo
    Forensic scientist putting swab into sample tube.
    Close-up of multiple test stick being placed into urine sample tube by female doctor. — Stock Photo
    Close-up of multiple test stick being placed into urine sample tube by female doctor.
    Daytime view of poster remains on brick building wall — Stock Photo
    Daytime view of poster remains on brick building wall
    Close-up of male scientist pipetting into test tubes. — Stock Photo
    Close-up of male scientist pipetting into test tubes.
    Close-up of pipetting colorful liquids into test tubes. — Stock Photo
    Close-up of pipetting colorful liquids into test tubes.
    Close-up of scientist hand pouring reagent into bottle for chemistry research. — Stock Photo
    Close-up of scientist hand pouring reagent into bottle for chemistry research.
    Hand of researcher holding vacutainer tube above pool of blood and syringe. — Stock Photo
    Hand of researcher holding vacutainer tube above pool of blood and syringe.
    Scientist holding meat piece with tweezers for food research. — Stock Photo
    Scientist holding meat piece with tweezers for food research.
    Close-up of laboratory technician holding tube with blood sample in gloved hand. — Stock Photo
    Close-up of laboratory technician holding tube with blood sample in gloved hand.
    DNA swab on genetic test results. — Stock Photo
    DNA swab on genetic test results.