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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.
    Cardiovascular system showing veins and arteries — Stock Photo
    Cardiovascular system showing veins and arteries
    Cholesterol plaque leading to atherosclerosis — Stock Photo
    Cholesterol plaque leading to atherosclerosis
    Human structural anatomy — Stock Photo
    Human structural anatomy
    Red blood cells — Stock Photo
    Red blood cells
    Arteries and veins of the hand — Stock Photo
    Arteries and veins of the hand
    Coloured scanning electron micrograph (SEM) of a section through a foetal vein filled with red blood cells (erythrocytes, red). — Stock Photo
    Coloured scanning electron micrograph (SEM) of a section through a foetal vein filled with red blood cells (erythrocytes, red).
    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.
    Illustration showing different types of blood cells, erythrocytes, neutrophil, monocyte, basophil, eosinophil, lymphocyte, and platelets. — Stock Photo
    Illustration showing different types of blood cells, erythrocytes, neutrophil, monocyte, basophil, eosinophil, lymphocyte, and platelets.
    Bloodstream showing red blood cells — Stock Photo
    Bloodstream showing red blood cells
    3d illustration of blood plasma and components of blood flowing from artery. — Stock Photo
    3d illustration of blood plasma and components of blood flowing from artery.
    Medical illustration of arteries, veins and lymphatic system in human legs — Stock Photo
    Medical illustration of arteries, veins and lymphatic system in human legs
    Ebola virus particles in blood, digital illustration. — Stock Photo
    Ebola virus particles in blood, digital illustration.
    Colored illustration showing abundant lymphoblast cells in human bone marrow smear in acute lymphoblastic leukaemia. — Stock Photo
    Colored illustration showing abundant lymphoblast cells in human bone marrow smear in acute lymphoblastic leukaemia.
    Illustration of platelets (thrombocytes) that have been activated (with extensions) and those that are non-activated. Platelets are part of the blood. When a blood vessel is damaged, the platelets become activated and secrete chemicals that cause the — Stock Photo
    Illustration of platelets (thrombocytes) that have been activated (with extensions) and those that are non-activated. Platelets are part of the blood. When a blood vessel is damaged, the platelets become activated and secrete chemicals that cause the
    Human skeleton with organs and circulatory system — Stock Photo
    Human skeleton with organs and circulatory 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.
    Schematic representation of human vein structure — Stock Photo
    Schematic representation of human vein structure
    Blood pressure and circulatory system with labels — Stock Photo
    Blood pressure and circulatory system with labels
    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
    Representation of human anatomy — Stock Photo
    Representation of human anatomy
    Blood vessels of the brain — Stock Photo
    Blood vessels of the brain
    First-aiders practicing cardiopulmonary resuscitation on training dummy. — Stock Photo
    First-aiders practicing cardiopulmonary resuscitation on training dummy.
    Medical illustration of circulatory system with heart and veins — Stock Photo
    Medical illustration of circulatory system with heart and veins
    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.
    Pathophysiology of diabetic foot ulcers — Stock Photo
    Pathophysiology of diabetic foot ulcers
    Red blood cells, digital illustration. — Stock Photo
    Red blood cells, digital illustration.
    Erythrocytes or red blood cells — Stock Photo
    Erythrocytes or red blood cells
    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).
    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.
    Medical illustration of arteries, veins and lymphatic system in human hand and arm — Stock Photo
    Medical illustration of arteries, veins and lymphatic system in human hand and arm
    Medical illustration of alveoli on black background — Stock Photo
    Medical illustration of alveoli on black background
    3D rendering of human skeleton with internal organs on black background — Stock Photo
    3D rendering of human skeleton with internal organs on black background
    Activated T lymphocytes and red blood cells on scanning electron micrograph. — Stock Photo
    Activated T lymphocytes and red blood cells on scanning electron micrograph.
    Red blood cells in blood vessel, digital illustration. — Stock Photo
    Red blood cells in blood vessel, digital illustration.
    Cholesterol plaque leading to atherosclerosis — Stock Photo
    Cholesterol plaque leading to atherosclerosis
    Skeletal and cardiovascular systems — Stock Photo
    Skeletal and cardiovascular systems
    Medical illustration of pulmonary embolism — Stock Photo
    Medical illustration of pulmonary embolism
    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.
    Chest, neck and head arteries — Stock Photo
    Chest, neck and head arteries
    Human structural anatomy — Stock Photo
    Human structural anatomy
    Normal cardiovascular system — Stock Photo
    Normal cardiovascular system
    Normal blood vessels, X-ray — Stock Photo
    Normal blood vessels, X-ray
    Cardiovascular system of an adult — Stock Photo
    Cardiovascular system of an adult
    Early stage of kidney cancer with a tumor on the kidney — Stock Photo
    Early stage of kidney cancer with a tumor on the kidney
    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.
    3D rendering of human circulatory system on black background — Stock Photo
    3D rendering of human circulatory system on black background
    Medical illustration of alveoli on black background — Stock Photo
    Medical illustration of alveoli on black background
    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).
    Visual rendering of Heart anatomy — Stock Photo
    Visual rendering of Heart anatomy
    Blood pressure and circulatory system — Stock Photo
    Blood pressure and circulatory system
    Female anatomy showing cardiovascular system on white background. — Stock Photo
    Female anatomy showing cardiovascular system on white background.
    Medical illustration of alveoli on black background — Stock Photo
    Medical illustration of alveoli on black background
    Colored illustration showing abundant lymphoblast cells in human bone marrow smear in acute lymphoblastic leukaemia. — Stock Photo
    Colored illustration showing abundant lymphoblast cells in human bone marrow smear in acute lymphoblastic leukaemia.
    Red blood cells, digital illustration. — Stock Photo
    Red blood cells, digital illustration.
    Human anatomical structure — Stock Photo
    Human anatomical structure
    Healthy cardiovascular system — Stock Photo
    Healthy cardiovascular system
    Colored illustration showing abundant lymphoblast cells in human bone marrow smear in acute lymphoblastic leukaemia. — Stock Photo
    Colored illustration showing abundant lymphoblast cells in human bone marrow smear in acute lymphoblastic leukaemia.
    Narrowed artery causing atherosclerosis — Stock Photo
    Narrowed artery causing atherosclerosis