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    Blood sample in test tube in hand of scientist. — Stock Photo
    Blood sample in test tube in hand of scientist.
    Tube with blood sample on metal tray in laboratory. — Stock Photo
    Tube with blood sample on metal tray in laboratory.
    Doctor examining boy teeth in dental clinic. — Stock Photo
    Doctor examining boy teeth in dental clinic.
    Female doctor holding tube with blood sample. — Stock Photo
    Female doctor holding tube with blood sample.
    Boy rejecting dental treatment in dental clinic. — Stock Photo
    Boy rejecting dental treatment in dental clinic.
    Mature blonde woman undergoing electroencephalography monitoring. — Stock Photo
    Mature blonde woman undergoing electroencephalography monitoring.
    Pipette adding sample to petri dish during experiment in laboratory. — Stock Photo
    Pipette adding sample to petri dish during experiment in laboratory.
    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.
    Researcher preparing samples of donated blood for analysis. — Stock Photo
    Researcher preparing samples of donated blood for analysis.
    Variety of potential drugs in pharmaceutical vials and test tubes. — Stock Photo
    Variety of potential drugs in pharmaceutical vials and test tubes.
    Doctors examining boy teeth in dental clinic with mouth mirror. — Stock Photo
    Doctors examining boy teeth in dental clinic with mouth mirror.
    Blood samples in centrifuge tubes on white background. — Stock Photo
    Blood samples in centrifuge tubes on white background.
    Female laboratory worker filling vials with pipette, close-up. — Stock Photo
    Female laboratory worker filling vials with pipette, close-up.
    Female hands feeling forehead of baby for measuring temperature. — Stock Photo
    Female hands feeling forehead of baby for measuring temperature.
    Doctor adjusting electroencephalography equipment on mature patient. — Stock Photo
    Doctor adjusting electroencephalography equipment on mature patient.
    DNA swab on genetic test results. — Stock Photo
    DNA swab on genetic test results.
    Preteen boy undergoing lung function test with female nurse. — Stock Photo
    Preteen boy undergoing lung function test with female nurse.
    Labelled vacutainer tubes containing blood samples, close-up. — Stock Photo
    Labelled vacutainer tubes containing blood samples, close-up.
    Chinese doctor showing x-ray test result to senior couple — Stock Photo
    Chinese doctor showing x-ray test result to senior couple
    Hand holding a multiwell tray containing blood samples. — Stock Photo
    Hand holding a multiwell tray containing blood samples.
    Cropped view of male doctor holding peak flow meter. — Stock Photo
    Cropped view of male doctor holding peak flow meter.
    Close-up of Blood oxygen monitor intensive care ward. — Stock Photo
    Close-up of Blood oxygen monitor intensive care ward.
    Young woman undergoing mammography procedure. — Stock Photo
    Young woman undergoing mammography procedure.
    Scientist experimenting with cultures in petri dishes with biohazard warning in microbiology lab. — Stock Photo
    Scientist experimenting with cultures in petri dishes with biohazard warning in microbiology lab.
    Researcher using a light microscope for studying tube containing blood sample. — Stock Photo
    Researcher using a light microscope for studying tube containing blood sample.
    Close-up of containers for blood group test. — Stock Photo
    Close-up of containers for blood group test.
    Cropped view of scientist holding sample for analytical testing. — Stock Photo
    Cropped view of scientist holding sample for analytical testing.
    Portrait of boy waiting for teeth examination in clinic. — Stock Photo
    Portrait of boy waiting for teeth examination in clinic.
    Close-up of sample tubes with medical samples. — Stock Photo
    Close-up of sample tubes with medical samples.
    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.
    Preteen boy undergoing lung function test with female nurse. — Stock Photo
    Preteen boy undergoing lung function test with female nurse.
    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.
    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.
    Female scientist holding microscope slide with blood sample. — Stock Photo
    Female scientist holding microscope slide with blood sample.
    Close-up of petri dishes and dropping pipette for genetic research. — Stock Photo
    Close-up of petri dishes and dropping pipette for genetic research.
    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.
    Colorful Eppendorf tubes in rack on white background. — Stock Photo
    Colorful Eppendorf tubes in rack on white background.
    Female researcher preparing multi-well sample tray of blood for analysis. — Stock Photo
    Female researcher preparing multi-well sample tray of blood for analysis.
    Scientists preparing glass slide with sample in laboratory. — Stock Photo
    Scientists preparing glass slide with sample in laboratory.
    Close-up of antibiotic testing in petri dish. — Stock Photo
    Close-up of antibiotic testing in petri dish.
    Cropped view of doctor holding vial of blood for testing. — Stock Photo
    Cropped view of doctor holding vial of blood for testing.
    Boy rejecting dental treatment in dental clinic. — Stock Photo
    Boy rejecting dental treatment in dental clinic.
    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.
    Close-up of microcentrifuge tubes with biologist in background. — Stock Photo
    Close-up of microcentrifuge tubes with biologist in background.
    Male scientist doing medical testing of sample under microscope. — Stock Photo
    Male scientist doing medical testing of sample under microscope.
    Blood samples in centrifuge tubes on white background. — Stock Photo
    Blood samples in centrifuge tubes on white background.
    Police evidence including finger print, DNA swab and results. — Stock Photo
    Police evidence including finger print, DNA swab and results.
    Gloved hand holding multiwell tray containing blood samples. — Stock Photo
    Gloved hand holding multiwell tray containing blood samples.
    Labelled vacutainer tubes containing blood samples, close-up. — Stock Photo
    Labelled vacutainer tubes containing blood samples, close-up.
    Radiographer taking computed tomography scan of female patient. — Stock Photo
    Radiographer taking computed tomography scan of female patient.
    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.
    Radiographers taking computed tomography scan of patient. — Stock Photo
    Radiographers taking computed tomography scan of patient.
    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.
    Doctors examining boy teeth in clinic. — Stock Photo
    Doctors examining boy teeth in clinic.