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    Red blood cells and white blood cells — Stock Photo
    Red blood cells and white blood cells
    Ebola virus particles in blood, digital illustration. — Stock Photo
    Ebola virus particles in blood, digital illustration.
    Cardiovascular system of an adult — Stock Photo
    Cardiovascular system of an adult
    Human heart anatomy — Stock Photo
    Human heart anatomy
    Human artery showing artery walls and bloodstream — Stock Photo
    Human artery showing artery walls and bloodstream
    Upper-body anatomy of adult male — Stock Photo
    Upper-body anatomy of adult male
    Normal human arteries, — Stock Photo
    Normal human arteries,
    Healthy cardiovascular system — Stock Photo
    Healthy cardiovascular system
    Comparison of different sized kidney stones in the human kidney — Stock Photo
    Comparison of different sized kidney stones in the human kidney
    Red blood cells — Stock Photo
    Red blood cells
    Sickle cell anemia — Stock Photo
    Sickle cell anemia
    Skeletal and cardiovascular systems of adult — Stock Photo
    Skeletal and cardiovascular systems of adult
    Red blood cells — Stock Photo
    Red blood cells
    Normal human arteries, — Stock Photo
    Normal human arteries,
    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.
    Doctors practicing chest compression on infant training dummies. — Stock Photo
    Doctors practicing chest compression on infant training dummies.
    Human artery showing artery walls and bloodstream — Stock Photo
    Human artery showing artery walls and bloodstream
    Normal red blood cells — Stock Photo
    Normal red blood cells
    Male anatomy with tissue and systems — Stock Photo
    Male anatomy with tissue and systems
    Normal male anatomy — Stock Photo
    Normal male anatomy
    Shoulder blood supply — Stock Photo
    Shoulder blood supply
    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.
    First-aiders practicing cardiopulmonary resuscitation on training dummy. — Stock Photo
    First-aiders practicing cardiopulmonary resuscitation on training dummy.
    Medical illustration of blood clotting process inside artery — Stock Photo
    Medical illustration of blood clotting process inside artery
    Red blood cells and white blood cells, digital illustration. — Stock Photo
    Red blood cells and white blood cells, digital illustration.
    Cardiovascular system showing veins and arteries — Stock Photo
    Cardiovascular system showing veins and arteries
    Red blood cells — Stock Photo
    Red blood cells
    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).
    Cross-section of human artery — Stock Photo
    Cross-section of human artery
    Human brain anatomy — Stock Photo
    Human brain anatomy
    Male anatomy with tissue and systems — Stock Photo
    Male anatomy with tissue and systems
    HIV human immunodeficiency virus in bloodstream, digital illustration — Stock Photo
    HIV human immunodeficiency virus in bloodstream, digital illustration
    Nanomachines working on red and white blood cells, digital illustration. — Stock Photo
    Nanomachines working on red and white blood cells, digital illustration.
    3D rendering of human circulatory system on black background — Stock Photo
    3D rendering of human circulatory system on black background
    Erythrocytes or red blood cells — Stock Photo
    Erythrocytes or red blood cells
    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
    Medical illustration of female breast arteries, veins and lymphatic system — Stock Photo
    Medical illustration of female breast arteries, veins and lymphatic system
    Newborn digestive and cardio-vascular systems — Stock Photo
    Newborn digestive and cardio-vascular systems
    Male anatomy with tissue and systems — Stock Photo
    Male anatomy with tissue and systems
    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.
    Coloured coronary angiogram (X-ray) of a 59 year old patient with severe stenosis (narrowing) in the left anterior interventricular coronary artery (running down left) and the left circumflex artery (centre). — Stock Photo
    Coloured coronary angiogram (X-ray) of a 59 year old patient with severe stenosis (narrowing) in the left anterior interventricular coronary artery (running down left) and the left circumflex artery (centre).
    Blood vessel with blood cells — Stock Photo
    Blood vessel with blood cells
    Medical illustration of female arteries, veins and lymphatic system — Stock Photo
    Medical illustration of female arteries, veins and lymphatic system
    Healthy red blood cells — Stock Photo
    Healthy red blood cells
    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.
    Skeletal and cardiovascular systems — Stock Photo
    Skeletal and cardiovascular systems
    Human vascular system — Stock Photo
    Human vascular system
    Normal cardiovascular system — Stock Photo
    Normal cardiovascular system
    Doctors undertaking cardiopulmonary resuscitation training on dummies. — Stock Photo
    Doctors undertaking cardiopulmonary resuscitation training on dummies.
    Entangled red blood vessels, digital illustration. — Stock Photo
    Entangled red blood vessels, digital illustration.
    Early stage of kidney cancer with a tumor on the kidney — Stock Photo
    Early stage of kidney cancer with a tumor on the kidney
    Medical illustration of artificial heart valve. — Stock Photo
    Medical illustration of artificial heart valve.
    Skeletal and cardiovascular systems — Stock Photo
    Skeletal and cardiovascular systems
    Narrowed artery causing atherosclerosis — Stock Photo
    Narrowed artery causing atherosclerosis
    Medical illustration of female circulatory system — Stock Photo
    Medical illustration of female circulatory system
    Cardiovascular system of an adult — Stock Photo
    Cardiovascular system of an adult
    Nervous and circulatory systems — Stock Photo
    Nervous and circulatory systems
    Arteries and veins of the hand — Stock Photo
    Arteries and veins of the hand
    Medical illustration of arteries, veins and lymphatic system in human legs and feet — Stock Photo
    Medical illustration of arteries, veins and lymphatic system in human legs and feet
    Human vein showing tissue stratification — Stock Photo
    Human vein showing tissue stratification