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    Racks of samples in test tubes and Petri dishes on laboratory table. — Stock Photo
    Racks of samples in test tubes and Petri dishes on laboratory table.
    Male head and neck anatomy and blood vessels, computer illustration. — Stock Photo
    Male head and neck anatomy and blood vessels, computer illustration.
    Human heart with blood vessels and bronchial tree on white background. — Stock Photo
    Human heart with blood vessels and bronchial tree on white background.
    Cropped view of doctor taking blood pressure of patient in hospital gown. — Stock Photo
    Cropped view of doctor taking blood pressure of patient in hospital gown.
    Hand of surgeon performing operation in operation theater of hospital — Stock Photo
    Hand of surgeon performing operation in operation theater of hospital
    Section of a muscular artery — Stock Photo
    Section of a muscular artery
    Whole and half blood oranges — Stock Photo
    Whole and half blood oranges
    Laboratory technicians working together in blood bank — Stock Photo
    Laboratory technicians working together in blood bank
    Veins in transparent dog body, anatomical computer illustration. — Stock Photo
    Veins in transparent dog body, anatomical computer illustration.
    Female anatomy showing vascular system, digital illustration. — Stock Photo
    Female anatomy showing vascular system, digital illustration.
    Hypodermic needle and blood, computer illustration — Stock Photo
    Hypodermic needle and blood, computer illustration
    School aged boy dressed as Dracula posing in costume on Halloween — Stock Photo
    School aged boy dressed as Dracula posing in costume on Halloween
    Orange and blood orange halves — Stock Photo
    Orange and blood orange halves
    Digital illustration showing red blood cells, platelets, neutrophils, monocyte and lymphocytes in normal blood smear. — Stock Photo
    Digital illustration showing red blood cells, platelets, neutrophils, monocyte and lymphocytes in normal blood smear.
    Close-up of plasma bags on a table in blood bank — Stock Photo
    Close-up of plasma bags on a table in blood bank
    Senior woman checking her blood pressure at home — Stock Photo
    Senior woman checking her blood pressure at home
    White blood cells, digital illustration. — Stock Photo
    White blood cells, digital illustration.
    Grey hair Fisherman filleting fish in boat — Stock Photo
    Grey hair Fisherman filleting fish in boat
    Realistic human heart model on black background, computer illustration. — Stock Photo
    Realistic human heart model on black background, computer illustration.
    B cell and antibodies, computer illustration — Stock Photo
    B cell and antibodies, computer illustration
    Plasmodium vivax protozoan inside red blood cells, digital illustration. — Stock Photo
    Plasmodium vivax protozoan inside red blood cells, digital illustration.
    Vascular system of human head, computer illustration. — Stock Photo
    Vascular system of human head, computer illustration.
    Blood sausage, chorizo and lemons on the wall — Stock Photo
    Blood sausage, chorizo and lemons on the wall
    Close-up of micropipette pipetting blood sample into microcentrifuge tubes. — Stock Photo
    Close-up of micropipette pipetting blood sample into microcentrifuge tubes.
    Digital illustration of abnormal white blood cells B-lymphocytes while hairy cell leukaemia. — Stock Photo
    Digital illustration of abnormal white blood cells B-lymphocytes while hairy cell leukaemia.
    Female doctor drawing blood from senior male patient in clinic examination room — Stock Photo
    Female doctor drawing blood from senior male patient in clinic examination room
    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.
    Human heart anatomy — Stock Photo
    Human heart anatomy
    T lymphocyte (orange) attached to a cancer cell (blue), illustration. T lymphocytes are a type of white blood cell which matures in the thymus — Stock Photo
    T lymphocyte (orange) attached to a cancer cell (blue), illustration. T lymphocytes are a type of white blood cell which matures in the thymus
    Gross anatomy of the human heart — Stock Photo
    Gross anatomy of the human heart
    Salmonella typhimurium bacteria — Stock Photo
    Salmonella typhimurium bacteria
    Oranges with mandarins and lemons — Stock Photo
    Oranges with mandarins and lemons
    Blood orange slices with a citrus press — Stock Photo
    Blood orange slices with a citrus press
    Whole and half blood oranges — Stock Photo
    Whole and half blood oranges
    Red and white blood cells — Stock Photo
    Red and white blood cells
    Blood samples in test tubes — Stock Photo
    Blood samples in test tubes
    Narrowed artery causing atherosclerosis — Stock Photo
    Narrowed artery causing atherosclerosis
    Female abdominal organs, computer illustration. — Stock Photo
    Female abdominal organs, computer illustration.
    Rack of test tubes with blood samples on blue background. — Stock Photo
    Rack of test tubes with blood samples on blue background.
    Mature male doctor processing donor blood in bags. — Stock Photo
    Mature male doctor processing donor blood in bags.
    Group of surgeons performing operation in operation theater of hospital — Stock Photo
    Group of surgeons performing operation in operation theater of hospital
    Illustration of healthy and fatty heart on white background. — Stock Photo
    Illustration of healthy and fatty heart on white background.
    White blood cell engulfing bacteria — Stock Photo
    White blood cell engulfing bacteria
    Stacked Petri dishes with blood agar on plain background. — Stock Photo
    Stacked Petri dishes with blood agar on plain background.
    Human papillomavirus particles in the bloodstream — Stock Photo
    Human papillomavirus particles in the bloodstream
    T-cells (turquoise) binding to cancer cells (pink), illustration. T-lymphocytes, or T-cells, are a type of white blood cell and components of the body's immune system. They mature in the thymus — Stock Photo
    T-cells (turquoise) binding to cancer cells (pink), illustration. T-lymphocytes, or T-cells, are a type of white blood cell and components of the body's immune system. They mature in the thymus
    Blood samples in a multi well plate during a clinical trial. — Stock Photo
    Blood samples in a multi well plate during a clinical trial.
    Laboratory technician analyzing blood bags in blood bank — Stock Photo
    Laboratory technician analyzing blood bags in blood bank
    Illustration of cross section of human skin with hair follicles and blood vessels. — Stock Photo
    Illustration of cross section of human skin with hair follicles and blood vessels.
    Close-up of blood pressure gauge. — Stock Photo
    Close-up of blood pressure gauge.
    Doctor checking female patient blood pressure in the hospital — Stock Photo
    Doctor checking female patient blood pressure in the hospital
    Megakaryocyte in human blood, computer illustration. — Stock Photo
    Megakaryocyte in human blood, computer illustration.
    Digital illustration of nit egg of human head louse attached to human hair. — Stock Photo
    Digital illustration of nit egg of human head louse attached to human hair.
    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.
    Bacteria amidst blood cells in blood vessel, digital illustration. — Stock Photo
    Bacteria amidst blood cells in blood vessel, digital illustration.
    Realistic human heart and blood vessels on white background, digital illustration. — Stock Photo
    Realistic human heart and blood vessels on white background, digital illustration.
    Artery partially blocked by an atheroma — Stock Photo
    Artery partially blocked by an atheroma
    Illustration of heart in human body silhouette. — Stock Photo
    Illustration of heart in human body silhouette.
    Coloured scanning electron micrograph of macrophage white blood cell. — Stock Photo
    Coloured scanning electron micrograph of macrophage white blood cell.
    Digital illustration showing destruction of lymphoblast cells, acute lymphoblastic leukaemia treatment concept. — Stock Photo
    Digital illustration showing destruction of lymphoblast cells, acute lymphoblastic leukaemia treatment concept.