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    Resting T lymphocytes. Coloured scanning electron micrograph (SEM) of resting T lymphocytes from a human blood sample. T lymphocytes, or T cells, are a type of white blood cell and components of the body's immune system — Stock Photo
    Resting T lymphocytes. Coloured scanning electron micrograph (SEM) of resting T lymphocytes from a human blood sample. T lymphocytes, or T cells, are a type of white blood cell and components of the body's immune system
    Medical illustration of arteries, veins and lymphatic system in human legs — Stock Photo
    Medical illustration of arteries, veins and lymphatic system in human legs
    Group of surgeons performing operation in operation theater of hospital — Stock Photo
    Group of surgeons performing operation in operation theater of hospital
    Petri dishes with blood agar stacked on blue background. — Stock Photo
    Petri dishes with blood agar stacked on blue background.
    Sickle cell anemia — Stock Photo
    Sickle cell anemia
    Female anatomy showing heart in transparent body silhouette, computer illustration. — Stock Photo
    Female anatomy showing heart in transparent body silhouette, computer illustration.
    Astrocyte brain glial cell connecting neuronal cells to blood vessel, digital illustration. — Stock Photo
    Astrocyte brain glial cell connecting neuronal cells to blood vessel, digital illustration.
    White blood cell — Stock Photo
    White blood cell
    White blood cells, digital illustration. — Stock Photo
    White blood cells, digital illustration.
    Male back anatomy and skeletal system, computer illustration. — Stock Photo
    Male back anatomy and skeletal system, computer illustration.
    First-aiders practicing cardiopulmonary resuscitation on training dummy. — Stock Photo
    First-aiders practicing cardiopulmonary resuscitation on training dummy.
    From above of crop unrecognizable doctor in sterile gloves taking blood test of patient with lancet in hospital — Stock Photo
    From above of crop unrecognizable doctor in sterile gloves taking blood test of patient with lancet in hospital
    Blood samples in test tubes — Stock Photo
    Blood samples in test tubes
    Close-up of 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
    Close-up of 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
    Close-up of butcher placing pieces of meat in a machine — Stock Photo
    Close-up of butcher placing pieces of meat in a machine
    Girl sitting at a table eating a blood orange — Stock Photo
    Girl sitting at a table eating a blood orange
    Nudaurelia capensis omega virus particles — Stock Photo
    Nudaurelia capensis omega virus particles
    Half-full anatomical heart model 3D illustration isolated on white background. — Stock Photo
    Half-full anatomical heart model 3D illustration isolated on white background.
    Activated macrophage attacking bacteria — Stock Photo
    Activated macrophage attacking bacteria
    Tick on human skin, computer illustration. — Stock Photo
    Tick on human skin, computer illustration.
    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.
    Spilt blood sample on white background. — Stock Photo
    Spilt blood sample on white background.
    Protozoan Plasmodium falciparum, causative agent of tropical malaria in red blood cells, digital illustration. — Stock Photo
    Protozoan Plasmodium falciparum, causative agent of tropical malaria in red blood cells, digital illustration.
    Monocyte white blood cell, digital illustration. — Stock Photo
    Monocyte white blood cell, digital illustration.
    Lymphocyte white blood cells — Stock Photo
    Lymphocyte white blood cells
    Professional medical equipment — Stock Photo
    Professional medical equipment
    Blood vessels of human head and neck, digital illustration. — Stock Photo
    Blood vessels of human head and neck, digital illustration.
    Blood vessel with blood cells — Stock Photo
    Blood vessel with blood cells
    Realistic body model showing female anatomy of muscles, mammary glands and blood vessels, computer illustration. — Stock Photo
    Realistic body model showing female anatomy of muscles, mammary glands and blood vessels, computer illustration.
    B cell and antibodies, computer illustration — Stock Photo
    B cell and antibodies, computer illustration
    Various citrus fruit: mandarins, pink grapefruits, kumquats, oranges and blood oranges — Stock Photo
    Various citrus fruit: mandarins, pink grapefruits, kumquats, oranges and blood oranges
    Laboratory technician noting weight of blood bags in blood bank — Stock Photo
    Laboratory technician noting weight of blood bags in blood bank
    Healthy female vascular system, computer illustration — Stock Photo
    Healthy female vascular system, computer illustration
    Close-up of laboratory technician working in blood bank — Stock Photo
    Close-up of laboratory technician working in blood bank
    Red blood cells and white blood cells — Stock Photo
    Red blood cells and white blood cells
    Microfilaria worms in a blood smear — Stock Photo
    Microfilaria worms in a blood smear
    Professional medical equipment — Stock Photo
    Professional medical equipment
    3d rendered illustration of blue silhouette of man with chest pain. — Stock Photo
    3d rendered illustration of blue silhouette of man with chest pain.
    Illustration of platelets fixing wound with erythrocytes blood flow. — Stock Photo
    Illustration of platelets fixing wound with erythrocytes blood flow.
    Structure of dog vascular system with colorful blood vessels in transparent body, computer illustration. — Stock Photo
    Structure of dog vascular system with colorful blood vessels in transparent body, computer illustration.
    Physiotherapist checking blood pressure of woman in clinic — Stock Photo
    Physiotherapist checking blood pressure of woman in clinic
    Illustration of inflamed heart in human body silhouette. — Stock Photo
    Illustration of inflamed heart in human body silhouette.
    Illustration of human blood cells flowing through blood vessel. — Stock Photo
    Illustration of human blood cells flowing through blood vessel.
    Vascular system of neck in male body, computer illustration. — Stock Photo
    Vascular system of neck in male body, computer illustration.
    Normal blood vessels, X-ray — Stock Photo
    Normal blood vessels, X-ray
    Erythrocytes and leukocytes blood cells in human blood vessel, digital illustration. — Stock Photo
    Erythrocytes and leukocytes blood cells in human blood vessel, digital illustration.
    Head louse on human hair, digital illustration. — Stock Photo
    Head louse on human hair, digital illustration.
    Human artery showing artery walls and bloodstream — Stock Photo
    Human artery showing artery walls and bloodstream
    Digital illustration of Neisseria gonorrhoeae bacteria inside neutrophil white blood cells. — Stock Photo
    Digital illustration of Neisseria gonorrhoeae bacteria inside neutrophil white blood cells.
    Medical illustration of human circulatory system — Stock Photo
    Medical illustration of human circulatory system
    Male abdominal organs, midsection, digital illustration. — Stock Photo
    Male abdominal organs, midsection, digital illustration.
    Immune system T-lymphocytes cells binding antigen, digital illustration. — Stock Photo
    Immune system T-lymphocytes cells binding antigen, digital illustration.
    Head louse on human hair, digital illustration. — Stock Photo
    Head louse on human hair, digital illustration.
    B cell and antibodies, computer illustration — Stock Photo
    B cell and antibodies, computer illustration
    Senior woman using tensiometer to measure blood pressure while sitting at table at home — Stock Photo
    Senior woman using tensiometer to measure blood pressure while sitting at table at home
    Digital illustration of senior man anatomy showing heart. — Stock Photo
    Digital illustration of senior man anatomy showing heart.
    Blood samples — Stock Photo
    Blood samples
    Blood oranges and clementines — Stock Photo
    Blood oranges and clementines
    Illustration of senior woman with heart tumour on black background. — Stock Photo
    Illustration of senior woman with heart tumour on black background.
    Grtzwurst blood sausages — Stock Photo
    Grtzwurst blood sausages