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    Cropped view of doctor holding vial of blood for testing. — Stock Photo
    Cropped view of doctor holding vial of blood for testing.
    Forensic scientist at scene of crime collecting DNA sample from knife as forensic evidence. — Stock Photo
    Forensic scientist at scene of crime collecting DNA sample from knife as forensic evidence.
    Male scientist doing medical testing of sample under microscope. — Stock Photo
    Male scientist doing medical testing of sample under microscope.
    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.
    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.
    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 pipetting blood into sample pot of clear liquid. — Stock Photo
    Close-up of pipetting blood into sample pot of clear liquid.
    Pipetting blood sample, close-up. — Stock Photo
    Pipetting blood sample, close-up.
    Blood-stained shirt as forensic evidence in laboratory. — Stock Photo
    Blood-stained shirt as forensic evidence in laboratory.
    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.
    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.
    Forensic scientist at scene of crime collecting DNA sample from knife as forensic evidence. — Stock Photo
    Forensic scientist at scene of crime collecting DNA sample from knife as forensic evidence.
    Forensic scientist at scene of crime collecting DNA sample from knife as forensic evidence. — Stock Photo
    Forensic scientist at scene of crime collecting DNA sample from knife as forensic evidence.
    Close-up of blood sample in tube and syringe. — Stock Photo
    Close-up of blood sample in tube and syringe.
    Close-up of blood sample in tube and syringe. — Stock Photo
    Close-up of blood sample in tube and syringe.
    Female scientist holding blood sample by microscope in laboratory. — Stock Photo
    Female scientist holding blood sample by microscope in laboratory.
    Researcher hand holding vacutainer tube in front of yellow tray. — Stock Photo
    Researcher hand holding vacutainer tube in front of yellow tray.
    Blood sample in kidney dish with urine sample on table. — Stock Photo
    Blood sample in kidney dish with urine sample on table.
    Female scientist holding blood sample by microscope in laboratory. — Stock Photo
    Female scientist holding blood sample by microscope in laboratory.
    Male scientist doing medical testing of sample under microscope. — Stock Photo
    Male scientist doing medical testing of sample under microscope.
    Close-up of blood sample in kidney dish. — Stock Photo
    Close-up of blood sample in kidney dish.
    Assortment of medical equipment and consumables on table. — Stock Photo
    Assortment of medical equipment and consumables on table.
    Medical equipment on metal tray. — Stock Photo
    Medical equipment on metal tray.
    Pool of blood in watch glass with syringe. — Stock Photo
    Pool of blood in watch glass with syringe.
    Spilt blood sample on white background. — Stock Photo
    Spilt blood sample on white background.
    Assortment of medical equipment and consumables on table. — Stock Photo
    Assortment of medical equipment and consumables on table.
    Assortment of medical equipment and consumables on table. — Stock Photo
    Assortment of medical equipment and consumables on table.
    Close-up view of medical syringes with blood sample. — Stock Photo
    Close-up view of medical syringes with blood sample.
    Spilt blood sample on white background. — Stock Photo
    Spilt blood sample on white background.
    Syringe with spilled blood on white background. — Stock Photo
    Syringe with spilled blood on white background.
    Pool of blood in watch glass with syringe. — Stock Photo
    Pool of blood in watch glass with syringe.
    Close-up view of medical syringes with blood sample. — Stock Photo
    Close-up view of medical syringes with blood sample.
    Blood sample and syringe on table. — Stock Photo
    Blood sample and syringe on table.
    Close-up view of medical equipment on tray. — Stock Photo
    Close-up view of medical equipment on tray.
    Medical equipment on metal tray. — Stock Photo
    Medical equipment on metal tray.
    Close-up view of researcher hand taking blood sample from rack of medical samples. — Stock Photo
    Close-up view of researcher hand taking blood sample from rack of medical samples.
    Close-up of rack of sample tubes with blood for analysis. — Stock Photo
    Close-up of rack of sample tubes with blood for analysis.
    Blood samples tubes in polystyrene tray. — Stock Photo
    Blood samples tubes in polystyrene tray.
    Medical equipment on metal tray. — Stock Photo
    Medical equipment on metal tray.
    Blood samples — Stock Photo
    Blood samples
    Woman doing finger prick test. — Stock Photo
    Woman doing finger prick test.
    Medical samples — Stock Photo
    Medical samples
    Blood collection kit — Stock Photo
    Blood collection kit
    Medical samples — Stock Photo
    Medical samples
    Woman doing finger prick test. — Stock Photo
    Woman doing finger prick test.
    Medical samples — Stock Photo
    Medical samples
    Female hands testing blood sample — Stock Photo
    Female hands testing blood sample
    Tubes containing blood samples — Stock Photo
    Tubes containing blood samples
    Blood samples in test tubes — Stock Photo
    Blood samples in test tubes
    Microfilaria worms in a blood smear — Stock Photo
    Microfilaria worms in a blood smear
    Blood test kit and and analysis results — Stock Photo
    Blood test kit and and analysis results
    Blood test kit and and analysis results — Stock Photo
    Blood test kit and and analysis results
    Blood samples in test tubes — Stock Photo
    Blood samples in test tubes
    Researcher extracting blood from a vial — Stock Photo
    Researcher extracting blood from a vial
    Blood samples ready for analysis — Stock Photo
    Blood samples ready for analysis
    Blood samples in test tubes — Stock Photo
    Blood samples in test tubes
    Researcher extracting blood from a vial — Stock Photo
    Researcher extracting blood from a vial
    Blood samples in test tubes — Stock Photo
    Blood samples in test tubes