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    Lung aneurysm, light micrograph. — Stock Photo
    Lung aneurysm, light micrograph.
    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).
    Coloured scanning electron micrograph (SEM) of a sectioned artery containing red blood cells (erythrocytes, red). — Stock Photo
    Coloured scanning electron micrograph (SEM) of a sectioned artery containing red blood cells (erythrocytes, red).
    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
    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
    Light micrograph (LM) of a section through the fingertip. — Stock Photo
    Light micrograph (LM) of a section through the fingertip.
    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
    Light micrograph (LM) of a vertical section through the pseudostratified columnar epithelium from the trachea, the tube in the throat leading from the mouth to the bronchus and the lungs. — Stock Photo
    Light micrograph (LM) of a vertical section through the pseudostratified columnar epithelium from the trachea, the tube in the throat leading from the mouth to the bronchus and the lungs.
    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
    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
    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
    Anatomy of bowman glomerular capsule — Stock Photo
    Anatomy of bowman glomerular capsule
    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 of red blood cells (erythrocytes, red) in a blood vessel. — Stock Photo
    Light micrograph of red blood cells (erythrocytes, red) in a blood vessel.
    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
    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 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
    Lung tissue, coloured transmission electron micrograph (TEM). — Stock Photo
    Lung tissue, coloured transmission electron micrograph (TEM).
    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
    Blood vessel in the lung — Stock Photo
    Blood vessel in the lung
    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).
    Kidney glomerulus and podocyte cells — Stock Photo
    Kidney glomerulus and podocyte cells
    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
    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
    Medical illustration of female body with digestive and circulatory systems — Stock Photo
    Medical illustration of female body with digestive and circulatory systems
    Blood vessel in the lung — Stock Photo
    Blood vessel in the lung
    Anatomy of human kidney function with labels — Stock Photo
    Anatomy of human kidney function with labels
    Medical illustration of alveoli on black background — Stock Photo
    Medical illustration of alveoli on black background
    Normal human renal artery — Stock Photo
    Normal human renal artery
    Kidney glomerulus and podocyte cells — Stock Photo
    Kidney glomerulus and podocyte cells
    Ruptured venule running through fatty tissue — Stock Photo
    Ruptured venule running through fatty tissue
    Blood vessel in the lung — Stock Photo
    Blood vessel in the lung
    Atherosclerosis and narrowed artery — Stock Photo
    Atherosclerosis and narrowed artery
    Balloon angioplasty procedure — Stock Photo
    Balloon angioplasty procedure
    Omentum fold of peritoneal membrane — Stock Photo
    Omentum fold of peritoneal membrane
    Odontoblasts and the dental pulp — Stock Photo
    Odontoblasts and the dental pulp