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    Single test tube with blood sample in rack. — Stock Photo
    Single test tube with blood sample in rack.
    Basophil white blood cell and red blood cells, digital illustration. — Stock Photo
    Basophil white blood cell and red blood cells, digital illustration.
    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.
    Neutrophil and monocyte white blood cells in blood smear, digital illustration. — Stock Photo
    Neutrophil and monocyte white blood cells in blood smear, digital illustration.
    Bone marrow cellular structure — Stock Photo
    Bone marrow cellular structure
    White blood cells with red blood cells, computer illustration. — Stock Photo
    White blood cells with red blood cells, computer illustration.
    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.
    Colored scanning electron micrograph of white blood cells and single platelet. — Stock Photo
    Colored scanning electron micrograph of white blood cells and single platelet.
    Red blood cells — Stock Photo
    Red blood cells
    Hypodermic needle and blood, computer illustration — Stock Photo
    Hypodermic needle and blood, computer illustration
    Abstract blood vessel with white and red blood cells, digital illustration. — Stock Photo
    Abstract blood vessel with white and red blood cells, digital illustration.
    Stacked Petri dishes with blood samples. — Stock Photo
    Stacked Petri dishes with blood samples.
    Neutrophil white blood cell and red blood cells, digital illustration. — Stock Photo
    Neutrophil white blood cell and red blood cells, digital illustration.
    Abstract blood vessel with white and red blood cells, digital illustration. — Stock Photo
    Abstract blood vessel with white and red blood cells, digital illustration.
    Abstract blood vessel with white and red blood cells, digital illustration. — Stock Photo
    Abstract blood vessel with white and red blood cells, digital illustration.
    Illustration of abnormal red blood cells known as spur cells acanthocytes. — Stock Photo
    Illustration of abnormal red blood cells known as spur cells acanthocytes.
    Bacteria amidst blood cells in blood vessel, digital illustration. — Stock Photo
    Bacteria amidst blood cells in blood vessel, digital illustration.
    Diseased blood cells with bacteria, computer illustration. — Stock Photo
    Diseased blood cells with bacteria, computer illustration.
    Diseased blood cells with bacteria, computer illustration. — Stock Photo
    Diseased blood cells with bacteria, computer illustration.
    Pool of blood in watch glass with syringe. — Stock Photo
    Pool of blood in watch glass with syringe.
    Illustration of abnormal red blood cells known as spur cells acanthocytes. — Stock Photo
    Illustration of abnormal red blood cells known as spur cells acanthocytes.
    Tube with blood sample on metal tray in laboratory, close-up. — Stock Photo
    Tube with blood sample on metal tray in laboratory, close-up.
    Neutrophil and monocyte white blood cells in blood smear, digital illustration. — Stock Photo
    Neutrophil and monocyte white blood cells in blood smear, digital illustration.
    Diseased blood cells with bacteria, computer illustration. — Stock Photo
    Diseased blood cells with bacteria, computer illustration.
    Researcher using a light microscope for studying tube containing blood sample. — Stock Photo
    Researcher using a light microscope for studying tube containing blood sample.
    Diseased blood cells with bacteria, computer illustration. — Stock Photo
    Diseased blood cells with bacteria, computer illustration.
    Colored scanning electron micrograph of white blood cells and single platelet. — Stock Photo
    Colored scanning electron micrograph of white blood cells and single platelet.
    Bag containing donated human blood, placenta and umbilical cord. — Stock Photo
    Bag containing donated human blood, placenta and umbilical cord.
    Erythrocytes red blood cells in human blood vessel, digital illustration. — Stock Photo
    Erythrocytes red blood cells in human blood vessel, digital illustration.
    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.
    Abstract blood vessel with white and red blood cells, digital illustration. — Stock Photo
    Abstract blood vessel with white and red blood cells, digital illustration.
    Close-up of doctor drawing female patient blood for PRP cosmetics treatment. — Stock Photo
    Close-up of doctor drawing female patient blood for PRP cosmetics treatment.
    Red and white blood cells — Stock Photo
    Red and white blood cells
    White blood cells with red blood cells, computer illustration. — Stock Photo
    White blood cells with red blood cells, computer illustration.
    Red blood cells and leukocytes in cross-section of blood vessel, digital illustration. — Stock Photo
    Red blood cells and leukocytes in cross-section of blood vessel, digital illustration.
    Bacteria amidst blood cells in blood vessel, digital illustration. — Stock Photo
    Bacteria amidst blood cells in blood vessel, digital illustration.
    Neutrophil white blood cell in blood, digital artwork. — Stock Photo
    Neutrophil white blood cell in blood, digital artwork.
    Leukaemia blood cells — Stock Photo
    Leukaemia blood cells
    Blood sample in kidney dish with urine sample on table. — Stock Photo
    Blood sample in kidney dish with urine sample on table.
    Doctor reading the results of blood test while holding blood sample. — Stock Photo
    Doctor reading the results of blood test while holding blood sample.
    Eosinophil white blood cells in blood vessel, digital illustration showing lobed nuclei. — Stock Photo
    Eosinophil white blood cells in blood vessel, digital illustration showing lobed nuclei.
    Illustration of abnormal red blood cells known as spur cells acanthocytes. — Stock Photo
    Illustration of abnormal red blood cells known as spur cells acanthocytes.
    Cut in an artery seen from its interior — Stock Photo
    Cut in an artery seen from its interior
    Red blood cells — Stock Photo
    Red blood cells
    Microcentrifuge sample tubes in styrofoam rack on blue background. — Stock Photo
    Microcentrifuge sample tubes in styrofoam rack on blue background.
    Neutrophil white blood cell in blood, digital artwork. — Stock Photo
    Neutrophil white blood cell in blood, digital artwork.
    Red blood cells and white blood cells — Stock Photo
    Red blood cells and white blood cells
    Coloured scanning electron micrograph of human red blood cells, white blood cells and platelets. — Stock Photo
    Coloured scanning electron micrograph of human red blood cells, white blood cells and platelets.
    Hypodermic needle and blood, computer illustration — Stock Photo
    Hypodermic needle and blood, computer illustration
    Bacteria amidst blood cells in blood vessel, digital illustration. — Stock Photo
    Bacteria amidst blood cells in blood vessel, digital illustration.
    Illustration of human blood cells in blood stream. — Stock Photo
    Illustration of human blood cells in blood stream.
    Close-up of human blood and various hiv samples in test tubes while screening in medical lab. — Stock Photo
    Close-up of human blood and various hiv samples in test tubes while screening in medical lab.
    Bacteria amidst blood cells in blood vessel, digital illustration. — Stock Photo
    Bacteria amidst blood cells in blood vessel, digital illustration.
    Bone marrow cellular structure — Stock Photo
    Bone marrow cellular structure
    Tube with blood sample on metal tray in laboratory, close-up. — Stock Photo
    Tube with blood sample on metal tray in laboratory, close-up.
    Blood test kit and and analysis results — Stock Photo
    Blood test kit and and analysis results
    Mature male doctor processing donor blood in bags. — Stock Photo
    Mature male doctor processing donor blood in bags.
    Scientists preparing multiwell plate with blood samples for testing and analysis. — Stock Photo
    Scientists preparing multiwell plate with blood samples for testing and analysis.
    Bacteria amidst blood cells in blood vessel, digital illustration. — Stock Photo
    Bacteria amidst blood cells in blood vessel, digital illustration.
    Red blood cells in blood stream — Stock Photo
    Red blood cells in blood stream