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    Coloured angiogram (blood vessel X-ray) of the coronary arteries of a 52 year old patient. The artery at right has had a stent placed in it to treat a blockage. — Stock Photo
    Coloured angiogram (blood vessel X-ray) of the coronary arteries of a 52 year old patient. The artery at right has had a stent placed in it to treat a blockage.
    Human skeleton with organs and circulatory system — Stock Photo
    Human skeleton with organs and circulatory system
    Human red blood cells trapped in a fibrin blood clot, coloured scanning electron micrograph (SEM). — Stock Photo
    Human red blood cells trapped in a fibrin blood clot, coloured scanning electron micrograph (SEM).
    Transparent human body showing heart and main circulatory system with internal organs, nervous, lymphatic and circulatory systems — Stock Photo
    Transparent human body showing heart and main circulatory system with internal organs, nervous, lymphatic and circulatory systems
    Anatomy of female kidneys reproductive organs — Stock Photo
    Anatomy of female kidneys reproductive organs
    Transparent human body with internal organs, nervous, lymphatic and circulatory systems — Stock Photo
    Transparent human body with internal organs, nervous, lymphatic and circulatory systems
    Medical illustration of blood vessels anatomy with labels — Stock Photo
    Medical illustration of blood vessels anatomy with labels
    Human hand with nervous, lymphatic and circulatory systems — Stock Photo
    Human hand with nervous, lymphatic and circulatory systems
    Medical illustration of human heart interior — Stock Photo
    Medical illustration of human heart interior
    Coloured magnetic resonance angiogram (MRA) of the arteries (white) supplying the kidneys (blue, upper left and right). — Stock Photo
    Coloured magnetic resonance angiogram (MRA) of the arteries (white) supplying the kidneys (blue, upper left and right).
    Coloured scanning electron micrograph (SEM) of a section through healthy skin. — Stock Photo
    Coloured scanning electron micrograph (SEM) of a section through healthy skin.
    Gross anatomy of the human heart — Stock Photo
    Gross anatomy of the human heart
    Human foot with nervous, lymphatic and circulatory systems — Stock Photo
    Human foot with nervous, lymphatic and circulatory systems
    Coloured profile computed tomography (CT) scan of the healthy torso of a 60 year old patient. — Stock Photo
    Coloured profile computed tomography (CT) scan of the healthy torso of a 60 year old patient.
    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.
    Anatomy of human bone marrow with labels — Stock Photo
    Anatomy of human bone marrow with labels
    Midsection view showing internal organs of human body — Stock Photo
    Midsection view showing internal organs of human body
    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).
    Transparent human body with internal organs, nervous, lymphatic and circulatory systems — Stock Photo
    Transparent human body with internal organs, nervous, lymphatic and circulatory systems
    Light micrograph (LM) showing blood supply to muscle fibers. — Stock Photo
    Light micrograph (LM) showing blood supply to muscle fibers.
    Anatomy of human kidney function — Stock Photo
    Anatomy of human kidney function
    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
    Coloured angiogram (blood vessel X-ray) of arteries in the pelvic region. — Stock Photo
    Coloured angiogram (blood vessel X-ray) of arteries in the pelvic region.
    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
    Medical illustration of pulmonary embolism — Stock Photo
    Medical illustration of pulmonary embolism
    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
    Human face and neck with nervous, lymphatic and circulatory systems — Stock Photo
    Human face and neck with nervous, lymphatic and circulatory systems
    Human eye with muscles and circulatory system — Stock Photo
    Human eye with muscles and circulatory system
    Light micrograph of a section through the choroid plexus of brain, showing two corpora amylacea (purple, bottom). — Stock Photo
    Light micrograph of a section through the choroid plexus of brain, showing two corpora amylacea (purple, bottom).
    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).
    Anatomy of back of human hand — Stock Photo
    Anatomy of back of human hand
    Transparent human body with internal organs, nervous, lymphatic and circulatory systems — Stock Photo
    Transparent human body with internal organs, nervous, lymphatic and circulatory systems
    Coloured scanning electron micrograph (SEM) of a fractured bile duct. — Stock Photo
    Coloured scanning electron micrograph (SEM) of a fractured bile duct.
    Light micrograph (LM) showing blood supply to muscle fibers. — Stock Photo
    Light micrograph (LM) showing blood supply to muscle fibers.
    Human face with bones — Stock Photo
    Human face with bones
    Blood cells in a blood vessel — Stock Photo
    Blood cells in a blood vessel
    Coloured scanning electron micrograph (SEM) of a fractured bile duct. — Stock Photo
    Coloured scanning electron micrograph (SEM) of a fractured bile duct.
    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
    Lung tissue, coloured transmission electron micrograph (TEM). — Stock Photo
    Lung tissue, coloured transmission electron micrograph (TEM).
    Computer illustration showing different stages of release of malaria merozoites from a red blood cell. — Stock Photo
    Computer illustration showing different stages of release of malaria merozoites from a red blood cell.
    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
    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).
    Hypodermic needle (26 gauge) and human blood, coloured scanning electron micrograph (SEM). — Stock Photo
    Hypodermic needle (26 gauge) and human blood, coloured scanning electron micrograph (SEM).
    Anatomy of human hand back side — Stock Photo
    Anatomy of human hand back side
    Kidney glomeruli, coloured scanning electron micrograph (SEM). — Stock Photo
    Kidney glomeruli, coloured scanning electron micrograph (SEM).
    Anatomy of human abdominal vein system — Stock Photo
    Anatomy of human abdominal vein system
    Medical illustration of human circulatory system — Stock Photo
    Medical illustration of human circulatory system
    Ruptured venule running through fatty tissue — Stock Photo
    Ruptured venule running through fatty tissue
    Coloured scanning electron micrograph (SEM) of human myeloid white blood cells found in bone marrow. — Stock Photo
    Coloured scanning electron micrograph (SEM) of human myeloid white blood cells found in bone marrow.
    Anatomy of human kidney function with labels — Stock Photo
    Anatomy of human kidney function with labels
    Normal human renal artery — Stock Photo
    Normal human renal artery
    Ruptured venule running through fatty tissue — Stock Photo
    Ruptured venule running through fatty tissue
    Atherosclerosis and narrowed artery — Stock Photo
    Atherosclerosis and narrowed artery
    Balloon angioplasty procedure — Stock Photo
    Balloon angioplasty procedure
    Mucosa of the trachea — Stock Photo
    Mucosa of the trachea