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    Light micrograph of a longitudinal section through a healthy arteriole. — Stock Photo
    Light micrograph of a longitudinal section through a healthy arteriole.
    Computer illustration of male musculature. — Stock Photo
    Computer illustration of male musculature.
    Human cell, computer illustration. — Stock Photo
    Human cell, computer illustration.
    Eyelash follicle, coloured scanning electron micrograph (SEM). — Stock Photo
    Eyelash follicle, coloured scanning electron micrograph (SEM).
    Light micrograph of human red blood cells (erythrocytes), with two unidentified white blood cells (leucocytes) near the centre. — Stock Photo
    Light micrograph of human red blood cells (erythrocytes), with two unidentified white blood cells (leucocytes) near the centre.
    Coloured scanning electron micrograph (SEM) of a section through fractured skeletal muscle to show large muscle bundles, or fascicles (green), surrounded by perimysium connective tissue (pink). — Stock Photo
    Coloured scanning electron micrograph (SEM) of a section through fractured skeletal muscle to show large muscle bundles, or fascicles (green), surrounded by perimysium connective tissue (pink).
    Eyelash follicle, coloured scanning electron micrograph (SEM). — Stock Photo
    Eyelash follicle, coloured scanning electron micrograph (SEM).
    Coloured profile X-ray of a human mandible (lower jaw). — Stock Photo
    Coloured profile X-ray of a human mandible (lower jaw).
    Fatcells structure and anatomy — Stock Photo
    Fatcells structure and anatomy
    Coloured scanning electron micrograph (SEM) of a squamous cell on the surface of the skin. — Stock Photo
    Coloured scanning electron micrograph (SEM) of a squamous cell on the surface of the skin.
    Male torso, computer artwork. — Stock Photo
    Male torso, computer artwork.
    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 transmission electron micrograph (TEM) of a transverse section through an artery. — Stock Photo
    Coloured transmission electron micrograph (TEM) of a transverse section through an artery.
    Light micrograph (LM) showing blood supply to muscle fibers. — Stock Photo
    Light micrograph (LM) showing blood supply to muscle fibers.
    Coloured scanning electron micrograph (SEM) of the interior of bone from a bird skull. — Stock Photo
    Coloured scanning electron micrograph (SEM) of the interior of bone from a bird skull.
    False-colour transmission electron micrograph (TEM) of human striated muscle. — Stock Photo
    False-colour transmission electron micrograph (TEM) of human striated muscle.
    Crystalline lens of the eye — Stock Photo
    Crystalline lens of the eye
    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).
    Crystalline lens of the eye — Stock Photo
    Crystalline lens of the eye
    Coloured scanning electron micrograph (SEM) of a squamous cell on the surface of the skin. — Stock Photo
    Coloured scanning electron micrograph (SEM) of a squamous cell on the surface of the skin.
    Smooth muscle structure, conceptual computer illustration. — Stock Photo
    Smooth muscle structure, conceptual computer illustration.
    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).
    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.
    Duct lined with pseudostratified epithelium — Stock Photo
    Duct lined with pseudostratified epithelium
    Blood cells in a blood vessel — Stock Photo
    Blood cells in a blood vessel
    Eyelash follicle, coloured scanning electron micrograph (SEM). — Stock Photo
    Eyelash follicle, coloured scanning electron micrograph (SEM).
    Coloured scanning electron micrograph (SEM) of a section through a muscle fibre. — Stock Photo
    Coloured scanning electron micrograph (SEM) of a section through a muscle fibre.
    Fatcells structure and anatomy — Stock Photo
    Fatcells structure and anatomy
    Section of the small intestine — Stock Photo
    Section of the small intestine
    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).
    Kidney glomerulus and podocyte cells — Stock Photo
    Kidney glomerulus and podocyte cells
    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).
    Coloured scanning electron micrograph (SEM) of a section through fractured skeletal muscle to show large muscle bundles, or fascicles (green), surrounded by perimysium connective tissue (pink). — Stock Photo
    Coloured scanning electron micrograph (SEM) of a section through fractured skeletal muscle to show large muscle bundles, or fascicles (green), surrounded by perimysium connective tissue (pink).
    Duct lined with pseudostratified epithelium — Stock Photo
    Duct lined with pseudostratified epithelium
    Blood vessel in the lung — Stock Photo
    Blood vessel in the lung
    Section through the cerebellum in the brain — Stock Photo
    Section through the cerebellum in the brain
    Longitudinal section through smooth muscle — Stock Photo
    Longitudinal section through smooth muscle
    Normal human renal artery — Stock Photo
    Normal human renal artery
    Fatcells structure and anatomy — Stock Photo
    Fatcells structure and anatomy
    Blood vessel in the lung — Stock Photo
    Blood vessel in the lung
    Atherosclerosis and narrowed artery — Stock Photo
    Atherosclerosis and narrowed artery
    Anatomy of person coughing — Stock Photo
    Anatomy of person coughing
    Human muscular structure — Stock Photo
    Human muscular structure
    Longitudinal section through smooth muscle — Stock Photo
    Longitudinal section through smooth muscle
    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
    Blood cells in a blood vessel — Stock Photo
    Blood cells in a blood vessel
    Heart of glass anatomy — Stock Photo
    Heart of glass anatomy
    Patient with a heart pacemaker — Stock Photo
    Patient with a heart pacemaker
    Rod-shaped bacteria — Stock Photo
    Rod-shaped bacteria
    Male internal anatomy — Stock Photo
    Male internal anatomy
    Heart attack rendering — Stock Photo
    Heart attack rendering
    Pregnant woman and 6 week embryo — Stock Photo
    Pregnant woman and 6 week embryo
    Human heart anatomy — Stock Photo
    Human heart anatomy
    Heart and circulatory system — Stock Photo
    Heart and circulatory system
    Human chest anatomy — Stock Photo
    Human chest anatomy
    Human muscular structure — Stock Photo
    Human muscular structure