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    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).
    Medical illustration of alveoli on black background — Stock Photo
    Medical illustration of alveoli on black background
    Anatomy of male urinary system — Stock Photo
    Anatomy of male urinary system
    Transparent human body with internal organs, nervous, lymphatic and circulatory systems — Stock Photo
    Transparent human body with internal organs, nervous, lymphatic and circulatory systems
    3D rendering of human lymphatic system on black background — Stock Photo
    3D rendering of human lymphatic system on black background
    Medical illustration of pulmonary embolism — Stock Photo
    Medical illustration of pulmonary embolism
    Medical illustration of female breast arteries, veins and lymphatic system — Stock Photo
    Medical illustration of female breast arteries, veins and lymphatic system
    3D rendering of human skeleton with internal organs on black background — Stock Photo
    3D rendering of human skeleton with internal organs on black background
    3D computed tomography (CT) scan of normal arteries in the brain of a 35 year old. — Stock Photo
    3D computed tomography (CT) scan of normal arteries in the brain of a 35 year old.
    Human midsection with internal organs — Stock Photo
    Human midsection with internal organs
    Narrowed abdominal arteries, coloured angiogram - blood vessel X-ray . — Stock Photo
    Narrowed abdominal arteries, coloured angiogram - blood vessel X-ray .
    3D rendering of digestive and male reproductive systems — Stock Photo
    3D rendering of digestive and male reproductive systems
    Medical illustration of female circulatory system with heart and arteries — Stock Photo
    Medical illustration of female circulatory system with heart and arteries
    Medical illustration of alveoli on black background — Stock Photo
    Medical illustration of alveoli on black background
    Medical illustration of arteries, veins and lymphatic system in female midsection — Stock Photo
    Medical illustration of arteries, veins and lymphatic system in female midsection
    Anatomy of heart interior with labels — Stock Photo
    Anatomy of heart interior with labels
    Human face and neck with nervous, lymphatic and circulatory systems — Stock Photo
    Human face and neck with nervous, lymphatic and circulatory systems
    Transparent view of human body showing kidneys and skeletal system — Stock Photo
    Transparent view of human body showing kidneys and skeletal system
    Blood pressure and circulatory system with labels — Stock Photo
    Blood pressure and circulatory system with labels
    Human eye with muscles and circulatory system — Stock Photo
    Human eye with muscles and circulatory system
    Conceptual computer Illustration of human heart anatomy. — Stock Photo
    Conceptual computer Illustration of human heart anatomy.
    3D rendering of human lymphatic system on black background — Stock Photo
    3D rendering of human lymphatic system on black background
    Section of a muscular artery — Stock Photo
    Section of a muscular artery
    Light micrograph of a section through tissue showing an artery (middle ) and a vein (top left). — Stock Photo
    Light micrograph of a section through tissue showing an artery (middle ) and a vein (top left).
    3D rendering of human lymphatic system with skeleton — Stock Photo
    3D rendering of human lymphatic system with skeleton
    Coloured three-dimensional computed tomography (CT) scan of a posterior view of a healthy rib cage and heart. — Stock Photo
    Coloured three-dimensional computed tomography (CT) scan of a posterior view of a healthy rib cage and heart.
    Transparent human body with internal organs, nervous, lymphatic and circulatory systems — Stock Photo
    Transparent human body with internal organs, nervous, lymphatic and circulatory systems
    Human face with bones — Stock Photo
    Human face with bones
    Blood cells in a blood vessel — Stock Photo
    Blood cells in a blood vessel
    Medical illustration of alveoli on black background — Stock Photo
    Medical illustration of alveoli on black background
    Medical illustration of blood vessels anatomy — Stock Photo
    Medical illustration of blood vessels anatomy
    Three dimensional medical illustration of male lymphatic system and reproductive organs — Stock Photo
    Three dimensional medical illustration of male lymphatic system and reproductive organs
    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 rendering of human circulatory system on black background — Stock Photo
    3D rendering of human circulatory system on black background
    Blood pressure and circulatory system — Stock Photo
    Blood pressure and circulatory system
    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 circulatory system with heart and veins — Stock Photo
    Medical illustration of circulatory system with heart and veins
    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).
    Medical illustration of arteries, veins and lymphatic system in female midsection — Stock Photo
    Medical illustration of arteries, veins and lymphatic system in female midsection
    Medical illustration of male skeleton with ureter system — Stock Photo
    Medical illustration of male skeleton with ureter system
    Medical illustration of human circulatory system — Stock Photo
    Medical illustration of human circulatory system
    Medical illustration of female body with digestive and circulatory systems — Stock Photo
    Medical illustration of female body with digestive and circulatory systems
    Medical illustration of alveoli on black background — Stock Photo
    Medical illustration of alveoli on black background
    Wall of a muscular artery — Stock Photo
    Wall of a muscular artery
    Blood cells in a blood vessel — Stock Photo
    Blood cells in a blood vessel
    Arteries and veins of the hand — Stock Photo
    Arteries and veins of the hand
    Heart of glass anatomy — Stock Photo
    Heart of glass anatomy
    Arteries and veins of the hand — Stock Photo
    Arteries and veins of the hand
    Human heart anatomy — Stock Photo
    Human heart anatomy
    Heart and circulatory system — Stock Photo
    Heart and circulatory system
    Cut in an artery seen from its interior — Stock Photo
    Cut in an artery seen from its interior
    Visual rendering of Heart anatomy — Stock Photo
    Visual rendering of Heart anatomy
    Red blood cells in an artery — Stock Photo
    Red blood cells in an artery
    Pathological anatomy of Stroke — Stock Photo
    Pathological anatomy of Stroke
    Patient with a heart pacemaker — Stock Photo
    Patient with a heart pacemaker
    Dual chamber pacemaker — Stock Photo
    Dual chamber pacemaker
    Human alveoli anatomy — Stock Photo
    Human alveoli anatomy
    Dual chamber pacemaker — Stock Photo
    Dual chamber pacemaker
    Newborn digestive and cardio-vascular systems — Stock Photo
    Newborn digestive and cardio-vascular systems