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    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.
    Entangled red blood vessels, digital illustration. — Stock Photo
    Entangled red blood vessels, digital illustration.
    Cross-section of human artery — Stock Photo
    Cross-section of human artery
    Pathological anatomy of Stroke — Stock Photo
    Pathological anatomy of Stroke
    Virus particles in blood stream, digital illustration. — Stock Photo
    Virus particles in blood stream, digital illustration.
    Medical illustration of blood clotting process inside artery — Stock Photo
    Medical illustration of blood clotting process inside artery
    Normal blood vessels, X-ray — Stock Photo
    Normal blood vessels, X-ray
    Red blood cells — Stock Photo
    Red blood cells
    Red blood cells — Stock Photo
    Red blood cells
    Red blood cells — Stock Photo
    Red blood cells
    Human heart anatomy — Stock Photo
    Human heart anatomy
    Malaria infection infecting red blood cells, digital illustration. — Stock Photo
    Malaria infection infecting red blood cells, digital 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.
    3D rendering of human circulatory system on black background — Stock Photo
    3D rendering of human circulatory system on black background
    Blood vessels of the neck — Stock Photo
    Blood vessels of the neck
    Medical illustration of alveoli on black background — Stock Photo
    Medical illustration of alveoli on black background
    Human heart circulatory and electrical system, 3d illustration. Cross section of the heart showing the ventricles and valves, and the electrical (conduction) system (yellow lines) and circulatory system (red and blue lines). — Stock Photo
    Human heart circulatory and electrical system, 3d illustration. Cross section of the heart showing the ventricles and valves, and the electrical (conduction) system (yellow lines) and circulatory system (red and blue lines).
    Nanomachines working on red blood cells, digital illustration. — Stock Photo
    Nanomachines working on red blood cells, digital illustration.
    Male anatomy with tissue and systems — Stock Photo
    Male anatomy with tissue and systems
    Medical illustration of head arteries, veins and lymphatic system — Stock Photo
    Medical illustration of head arteries, veins and lymphatic system
    Digital illustration showing abundant lymphoblast cells in human blood in acute lymphoblastic leukaemia. — Stock Photo
    Digital illustration showing abundant lymphoblast cells in human blood in acute lymphoblastic leukaemia.
    Human artery showing artery walls and bloodstream — Stock Photo
    Human artery showing artery walls and bloodstream
    Early stage of kidney cancer with a tumor on the kidney — Stock Photo
    Early stage of kidney cancer with a tumor on the kidney
    Ruptured venule running through fatty tissue — Stock Photo
    Ruptured venule running through fatty tissue
    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.
    Red blood cells in blood vessel, digital illustration. — Stock Photo
    Red blood cells in blood vessel, digital illustration.
    Brain's blood supply — Stock Photo
    Brain's blood supply
    Illustration of low density cholesterol lipoprotein in bloodstream. — Stock Photo
    Illustration of low density cholesterol lipoprotein in bloodstream.
    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.
    Gross anatomy of the human heart — Stock Photo
    Gross anatomy of the human heart
    Human vascular system — Stock Photo
    Human vascular system
    Human red blood cells — Stock Photo
    Human red blood cells
    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.
    Doctors undertaking cardiopulmonary resuscitation training on dummies. — Stock Photo
    Doctors undertaking cardiopulmonary resuscitation training on dummies.
    Cholesterol plaque leading to atherosclerosis — Stock Photo
    Cholesterol plaque leading to atherosclerosis
    HIV human immunodeficiency virus in bloodstream, digital illustration — Stock Photo
    HIV human immunodeficiency virus in bloodstream, digital illustration
    Red blood cells — Stock Photo
    Red blood cells
    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.
    Red blood cells in blood vessel, digital illustration. — Stock Photo
    Red blood cells in blood vessel, digital 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.
    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.
    Human cardiovascular system — Stock Photo
    Human cardiovascular system
    Bloodstream showing red blood cells — Stock Photo
    Bloodstream showing red 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.
    Human cardiovascular system — Stock Photo
    Human cardiovascular system
    Blood supply network of human head — Stock Photo
    Blood supply network of human head
    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.
    Ebola virus particles in blood, digital illustration. — Stock Photo
    Ebola virus particles in blood, digital illustration.
    Skeletal and cardiovascular systems — Stock Photo
    Skeletal and cardiovascular systems
    Male anatomy with tissue and systems — Stock Photo
    Male anatomy with tissue and systems
    Medical illustration of human circulatory system — Stock Photo
    Medical illustration of human circulatory system
    3d illustration of activated platelets and thrombocytes while healing and closure of wound. — Stock Photo
    3d illustration of activated platelets and thrombocytes while healing and closure of wound.
    Human vein showing tissue stratification — Stock Photo
    Human vein showing tissue stratification
    Coloured scanning electron micrograph (SEM) of a section through a vein in the liver, which is filled with red blood cells (erythrocytes, red). — Stock Photo
    Coloured scanning electron micrograph (SEM) of a section through a vein in the liver, which is filled with red blood cells (erythrocytes, red).
    Male anatomy with tissue and systems — Stock Photo
    Male anatomy with tissue and systems
    Red blood cells — Stock Photo
    Red blood cells
    Digital illustration showing abundant lymphoblast cells in human blood in acute lymphoblastic leukaemia. — Stock Photo
    Digital illustration showing abundant lymphoblast cells in human blood in acute lymphoblastic leukaemia.
    Female cardiovascular system on white background. — Stock Photo
    Female cardiovascular system on white background.
    Human anatomical structure — Stock Photo
    Human anatomical structure
    Red blood cells in blood vessel, digital illustration. — Stock Photo
    Red blood cells in blood vessel, digital illustration.