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    Blood sample awaiting testing in laboratory, close-up with selective focus. — Stock Photo
    Blood sample awaiting testing in laboratory, close-up with selective focus.
    Scientists viewing sample on glass slide under light microscope. — Stock Photo
    Scientists viewing sample on glass slide under light microscope.
    Colored scanning electron micrograph of resting T-lymphocytes from human blood sample. — Stock Photo
    Colored scanning electron micrograph of resting T-lymphocytes from human blood sample.
    Laboratory technicians analyzing blood sample in blood bank — Stock Photo
    Laboratory technicians analyzing blood sample in blood bank
    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.
    Technician hand holding blood sample ready for testing in laboratory. — Stock Photo
    Technician hand holding blood sample ready for testing in laboratory.
    Researcher hand holding vacutainer tube in front of yellow tray. — Stock Photo
    Researcher hand holding vacutainer tube in front of yellow tray.
    Assortment of medical equipment and consumables on table. — Stock Photo
    Assortment of medical equipment and consumables on table.
    Colored scanning electron micrograph of activated T lymphocyte from human blood sample. — Stock Photo
    Colored scanning electron micrograph of activated T lymphocyte from human blood sample.
    Pool of blood in watch glass with syringe. — Stock Photo
    Pool of blood in watch glass with syringe.
    Close-up of blood sample in tube and syringe. — Stock Photo
    Close-up of blood sample in tube and syringe.
    Close-up of pipetting blood sample into microcentrifuge tubes. — Stock Photo
    Close-up of pipetting blood sample into microcentrifuge tubes.
    Medical equipment on metal tray. — Stock Photo
    Medical equipment on metal tray.
    Researcher extracting blood from a vial — Stock Photo
    Researcher extracting blood from a vial
    Colored scanning electron micrograph of activated T lymphocyte from human blood sample. — Stock Photo
    Colored scanning electron micrograph of activated T lymphocyte from human blood sample.
    Technician hand holding blood sample ready for testing in laboratory. — Stock Photo
    Technician hand holding blood sample ready for testing in laboratory.
    Assortment of medical equipment and consumables on table. — Stock Photo
    Assortment of medical equipment and consumables on table.
    Researcher hand holding vacutainer tube in front of yellow tray. — Stock Photo
    Researcher hand holding vacutainer tube in front of yellow tray.
    Gloved hand holding blood sample in test tube. — Stock Photo
    Gloved hand holding blood sample in test tube.
    Scientist hand holding blood drop sample on microscope slide, studio shot. — Stock Photo
    Scientist hand holding blood drop sample on microscope slide, studio shot.
    Mother helping son test blood sugar — Stock Photo
    Mother helping son test blood sugar
    Close-up of pipetting blood sample into microcentrifuge tubes. — Stock Photo
    Close-up of pipetting blood sample into microcentrifuge tubes.
    Microfilaria worms in a blood smear — Stock Photo
    Microfilaria worms in a blood smear
    Human blood cells, light micrograph. — Stock Photo
    Human blood cells, light micrograph.
    Laboratory technicians analyzing blood sample in blood bank — Stock Photo
    Laboratory technicians analyzing blood sample in blood bank
    Pool of blood in watch glass with syringe. — Stock Photo
    Pool of blood in watch glass with syringe.
    Female scientist holding blood sample by microscope in laboratory. — Stock Photo
    Female scientist holding blood sample by microscope in laboratory.
    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.
    Computer generated image of capsules modeled on sample of fluoxetine — Stock Photo
    Computer generated image of capsules modeled on sample of fluoxetine
    Woman taking her own blood sugar — Stock Photo
    Woman taking her own blood sugar
    Scientists preparing multiwell plate with blood samples for testing and analysis. — Stock Photo
    Scientists preparing multiwell plate with blood samples for testing and analysis.
    Medical check-up including blood and urine test samples and results. — Stock Photo
    Medical check-up including blood and urine test samples and results.
    Forensics expert collecting blood sample from crime scene. — Stock Photo
    Forensics expert collecting blood sample from crime scene.
    Tubes containing blood samples — Stock Photo
    Tubes containing blood samples
    Single test tube with blood sample in rack. — Stock Photo
    Single test tube with blood sample in rack.
    Colored scanning electron micrograph of resting T-lymphocytes from human blood sample. — Stock Photo
    Colored scanning electron micrograph of resting T-lymphocytes from human blood sample.
    Close-up of rack of sample tubes with blood for analysis. — Stock Photo
    Close-up of rack of sample tubes with blood for analysis.
    Agar plate and specimen brush on blue background. — Stock Photo
    Agar plate and specimen brush on blue background.
    Doctor reading the results of blood test while holding blood sample. — Stock Photo
    Doctor reading the results of blood test while holding blood sample.
    Blood cells, light micrograph. — Stock Photo
    Blood cells, light micrograph.
    Blood test kit and and analysis results — Stock Photo
    Blood test kit and and analysis results
    Colored scanning electron micrograph of resting T-lymphocytes from human blood sample. — Stock Photo
    Colored scanning electron micrograph of resting T-lymphocytes from human blood sample.
    Laboratory technician analyzing blood bags in blood bank — Stock Photo
    Laboratory technician analyzing blood bags in blood bank
    Woman doing finger prick test. — Stock Photo
    Woman doing finger prick test.
    Laboratory technician holding test tubes in blood bank — Stock Photo
    Laboratory technician holding test tubes in blood bank
    Female scientist holding tube with blood sample. — Stock Photo
    Female scientist holding tube with blood sample.
    Blood sample and syringe on table. — Stock Photo
    Blood sample and syringe on table.
    Laboratory technician holding test tubes in blood bank — Stock Photo
    Laboratory technician holding test tubes in blood bank
    African American male doctor in medical glove demonstrating test tube with blood sample on white background — Stock Photo
    African American male doctor in medical glove demonstrating test tube with blood sample on white background
    Close-up of plasma bags in a crate at blood bank — Stock Photo
    Close-up of plasma bags in a crate at blood bank
    Forensics expert examining with flashlight evidence glass of wine at crime scene. — Stock Photo
    Forensics expert examining with flashlight evidence glass of wine at crime scene.
    Close-up of blood sample in tube and syringe. — Stock Photo
    Close-up of blood sample in tube and syringe.
    Medical samples — Stock Photo
    Medical samples
    Forensics expert dusting for fingerprints at crime scene. — Stock Photo
    Forensics expert dusting for fingerprints at crime scene.
    Micropipette pipetting blood sample into Petri dishes. — Stock Photo
    Micropipette pipetting blood sample into Petri dishes.
    Micropipette pipetting blood sample into Petri dish. — Stock Photo
    Micropipette pipetting blood sample into Petri dish.
    Laboratory technicians analyzing blood sample in blood bank — Stock Photo
    Laboratory technicians analyzing blood sample in blood bank
    Blood sampling vacutainer tubes in rack, close-up. — Stock Photo
    Blood sampling vacutainer tubes in rack, close-up.
    Female hands testing blood sample — Stock Photo
    Female hands testing blood sample
    Laboratory technician analyzing blood bag in blood bank — Stock Photo
    Laboratory technician analyzing blood bag in blood bank