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    3d illustration of leukocyte cells secreting allergen antibodies while allergy. — Stock Photo
    3d illustration of leukocyte cells secreting allergen antibodies while allergy.
    B-lymphocyte cells, computer illustration — Stock Photo
    B-lymphocyte cells, computer illustration
    Petri dishes with blood samples on plain background. — Stock Photo
    Petri dishes with blood samples on plain background.
    Rack of test tubes with blood samples in laboratory. — Stock Photo
    Rack of test tubes with blood samples in laboratory.
    Blood samples in test tubes — Stock Photo
    Blood samples in test tubes
    Blood in human urine in sample pots, studio shot. — Stock Photo
    Blood in human urine in sample pots, studio shot.
    Stacked Petri dishes with blood samples. — Stock Photo
    Stacked Petri dishes with blood samples.
    Close-up of micropipette pipetting blood sample into microcentrifuge tubes. — Stock Photo
    Close-up of micropipette pipetting blood sample into microcentrifuge tubes.
    Doctor reading the results of blood test while holding blood sample. — Stock Photo
    Doctor reading the results of blood test while holding blood sample.
    Close-up of human blood and various medical samples in test tubes while screening in medical lab. — Stock Photo
    Close-up of human blood and various medical samples in test tubes while screening in medical lab.
    Single test tube with blood sample. — Stock Photo
    Single test tube with blood sample.
    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.
    Illustration of blue liquid injected into bloodstream with syringe seen from inside with blood and green virus cells. — Stock Photo
    Illustration of blue liquid injected into bloodstream with syringe seen from inside with blood and green virus cells.
    Close-up of human urine, blood and various chemistry samples in test tubes while screening in medical lab. — Stock Photo
    Close-up of human urine, blood and various chemistry samples in test tubes while screening in medical lab.
    Micropipette pipetting blood sample into Petri dish. — Stock Photo
    Micropipette pipetting blood sample into Petri dish.
    Petri dish with blood agar on blue background. — Stock Photo
    Petri dish with blood agar on blue background.
    Micropipette pipetting blood sample into Petri dish. — Stock Photo
    Micropipette pipetting blood sample into Petri dish.
    Pipette and petri dishes for blood testing. — Stock Photo
    Pipette and petri dishes for blood testing.
    Testing blood sample from a multi well plate during a clinical investigation. — Stock Photo
    Testing blood sample from a multi well plate during a clinical investigation.
    Close-up of pipetting blood sample into microcentrifuge tubes. — Stock Photo
    Close-up of pipetting blood sample into microcentrifuge tubes.
    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.
    Glass slide containing human sample under light microscope for medical testing. — Stock Photo
    Glass slide containing human sample under light microscope for medical testing.
    Blood samples in PCR tubes. — Stock Photo
    Blood samples in PCR tubes.
    Microscope and piles on Petri dishes in laboratory on blue background. — Stock Photo
    Microscope and piles on Petri dishes in laboratory on blue background.
    Microscope and piles on Petri dishes in laboratory on blue background. — Stock Photo
    Microscope and piles on Petri dishes in laboratory on blue background.
    Micropipette pipetting blood sample into Petri dishes. — Stock Photo
    Micropipette pipetting blood sample into Petri dishes.
    Doctor preparing HIV test sample for testing in laboratory. — Stock Photo
    Doctor preparing HIV test sample for testing in laboratory.
    3d illustration of cancer cell attacked and killed by lymphocytes. — Stock Photo
    3d illustration of cancer cell attacked and killed by lymphocytes.
    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.
    Green illumination of centrifuge with biohazard test tubes, biological research digital illustration. — Stock Photo
    Green illumination of centrifuge with biohazard test tubes, biological research digital illustration.
    Technician hand holding blood sample ready for testing in laboratory. — Stock Photo
    Technician hand holding blood sample ready for testing in laboratory.
    Close-up of containers for blood group test. — Stock Photo
    Close-up of containers for blood group test.
    Close-up of micropipette pipetting blood sample into Petri dishes. — Stock Photo
    Close-up of micropipette pipetting blood sample into Petri dishes.
    Technician hand holding blood sample ready for testing in laboratory. — Stock Photo
    Technician hand holding blood sample ready for testing in laboratory.
    Dendritic cells of immune system — Stock Photo
    Dendritic cells of immune system
    Basophil white blood cell and red blood cells, digital illustration. — Stock Photo
    Basophil white blood cell and red blood cells, digital illustration.
    DNA researcher pipetting into tube with reference in background. — Stock Photo
    DNA researcher pipetting into tube with reference in background.
    Blood samples in a multi well plate during a clinical trial. — Stock Photo
    Blood samples in a multi well plate during a clinical trial.
    Close-up of person hand holding microscope slide with red dot. — Stock Photo
    Close-up of person hand holding microscope slide with red dot.
    Blood samples in a multi well plate during a clinical trial. — Stock Photo
    Blood samples in a multi well plate during a clinical trial.
    Blood samples for testing in microcentrifuge tubes. — Stock Photo
    Blood samples for testing in microcentrifuge tubes.
    Close-up of stethoscope alongside blood sample in test tube, syringe and medical vial in a clinic. — Stock Photo
    Close-up of stethoscope alongside blood sample in test tube, syringe and medical vial in a clinic.
    Nurse tests a person for Covid-19. — Stock Photo
    Nurse tests a person for Covid-19.
    Close-up of pipetting blood sample into microcentrifuge tubes. — Stock Photo
    Close-up of pipetting blood sample into microcentrifuge tubes.
    Unrecognizable serious black male scientist in medical robe and mask demonstrating blood sample in test tube while having video call on laptop in clinic — Stock Photo
    Unrecognizable serious black male scientist in medical robe and mask demonstrating blood sample in test tube while having video call on laptop in clinic
    Close-up of human blood and various medical samples in test tubes while screening in medical lab. — Stock Photo
    Close-up of human blood and various medical samples in test tubes while screening in medical lab.
    Forensic evidence collection with knife for DNA forensic test. — Stock Photo
    Forensic evidence collection with knife for DNA forensic test.
    Blood samples ready for analysis — Stock Photo
    Blood samples ready for analysis
    3d illustration of cancer cell attacked and killed by lymphocytes. — Stock Photo
    3d illustration of cancer cell attacked and killed by lymphocytes.
    Glass phial with blood sample. — Stock Photo
    Glass phial with blood sample.
    Close-up of micropipette pipetting blood sample into microcentrifuge tubes. — Stock Photo
    Close-up of micropipette pipetting blood sample into microcentrifuge tubes.
    Microscope and pile on Petri dishes in laboratory on blue background. — Stock Photo
    Microscope and pile on Petri dishes in laboratory on blue background.
    Closeup set of medical flasks with blood samples arranged in container in modern hospital laboratory — Stock Photo
    Closeup set of medical flasks with blood samples arranged in container in modern hospital laboratory
    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.
    Forensic evidence collection with knife for DNA forensic test. — Stock Photo
    Forensic evidence collection with knife for DNA forensic test.
    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.
    Single test tube with blood sample in rack. — Stock Photo
    Single test tube with blood sample in rack.
    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.
    Blood sample in tube on blue background. — Stock Photo
    Blood sample in tube on blue background.
    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.