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    Coloured scanning electron micrograph of osteocyte bone cell surrounded by bone tissue. — Stock Photo
    Coloured scanning electron micrograph of osteocyte bone cell surrounded by bone tissue.
    Coloured scanning electron micrograph of human red blood cells, white blood cells and platelets. — Stock Photo
    Coloured scanning electron micrograph of human red blood cells, white blood cells and platelets.
    Tumour affecting the pituitary gland — Stock Photo
    Tumour affecting the pituitary gland
    Microvilli from the small intestine — Stock Photo
    Microvilli from the small intestine
    Surface of a fallopian tube — Stock Photo
    Surface of a fallopian tube
    Vaccinia virus particle — Stock Photo
    Vaccinia virus particle
    Coloured scanning electron micrograph of human red blood cells, white blood cells and platelets. — Stock Photo
    Coloured scanning electron micrograph of human red blood cells, white blood cells and platelets.
    Water flea (Polyphemus pediculus), coloured scanning electron micrograph (SEM). — Stock Photo
    Water flea (Polyphemus pediculus), coloured scanning electron micrograph (SEM).
    Blood clot structure — Stock Photo
    Blood clot structure
    Caterpillar hairs. Coloured scanning electron micrograph (SEM) of hairs from the vapourer moth (Orgyia antiqua) caterpillar. — Stock Photo
    Caterpillar hairs. Coloured scanning electron micrograph (SEM) of hairs from the vapourer moth (Orgyia antiqua) caterpillar.
    Coloured frontal X-ray of a blocked intestine (upper centre). — Stock Photo
    Coloured frontal X-ray of a blocked intestine (upper centre).
    Stunning unique infra red landscape — Stock Photo
    Stunning unique infra red landscape
    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.
    Heart pacemaker, X-ray — Stock Photo
    Heart pacemaker, X-ray
    Red blood cells — Stock Photo
    Red blood cells
    Vaccinia virus particle — Stock Photo
    Vaccinia virus particle
    Mixed oral bacteria — Stock Photo
    Mixed oral bacteria
    Pyoderma skin disease — Stock Photo
    Pyoderma skin disease
    Coloured computed tomography (CT) scan of a section through the chest of a 76-year-old male patient with a malignant (cancerous) tumour (bright, right) of the bronchus. — Stock Photo
    Coloured computed tomography (CT) scan of a section through the chest of a 76-year-old male patient with a malignant (cancerous) tumour (bright, right) of the bronchus.
    Coiled proboscis of a moth — Stock Photo
    Coiled proboscis of a moth
    Helicobacter pylori bacterium — Stock Photo
    Helicobacter pylori bacterium
    Abstract coloured scanning electron micrograph of crystalline surface of fractured gallstone. — Stock Photo
    Abstract coloured scanning electron micrograph of crystalline surface of fractured gallstone.
    Phytoplankton diatom Coscinodiscus sp — Stock Photo
    Phytoplankton diatom Coscinodiscus sp
    Human hair shafts, digital illustration. — Stock Photo
    Human hair shafts, digital illustration.
    Carcinoma cell, coloured transmission electron micrograph (TEM). — Stock Photo
    Carcinoma cell, coloured transmission electron micrograph (TEM).
    Arthritic hand anatomy — Stock Photo
    Arthritic hand anatomy
    Colored scanning electron micrograph showing urethral epithelium of urethra. — Stock Photo
    Colored scanning electron micrograph showing urethral epithelium of urethra.
    Coloured scanning electron micrograph (SEM) of the shell of the foraminiferan Orbulina sp. — Stock Photo
    Coloured scanning electron micrograph (SEM) of the shell of the foraminiferan Orbulina sp.
    Sarcoptic mange mites eggs — Stock Photo
    Sarcoptic mange mites eggs
    Coloured scanning electron micrograph (SEM) of a foraminiferan microfossil from maldives beach sand. — Stock Photo
    Coloured scanning electron micrograph (SEM) of a foraminiferan microfossil from maldives beach sand.
    Passion flower pollen — Stock Photo
    Passion flower pollen
    Epithelium from a fallopian tube — Stock Photo
    Epithelium from a fallopian tube
    Scanning electron micrograph (SEM) of a PC12 neurone in culture. — Stock Photo
    Scanning electron micrograph (SEM) of a PC12 neurone in culture.
    Pyoderma skin disease — Stock Photo
    Pyoderma skin disease
    Chest, neck and head arteries — Stock Photo
    Chest, neck and head arteries
    Fractured myelinated nerve fibres — Stock Photo
    Fractured myelinated nerve fibres
    Total hip replacement — Stock Photo
    Total hip replacement
    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).
    Prosthetic knee joint — Stock Photo
    Prosthetic knee joint
    Fly head anatomy — Stock Photo
    Fly head anatomy
    Red blood cells — Stock Photo
    Red blood cells
    Mixed oral bacteria — Stock Photo
    Mixed oral bacteria
    Villi from the lining of the jejunum — Stock Photo
    Villi from the lining of the jejunum
    Shoulder and elbow joints anatomy — Stock Photo
    Shoulder and elbow joints anatomy
    T lymphocyte cells attached to cancer cell — Stock Photo
    T lymphocyte cells attached to cancer cell
    Coloured scanning electron micrograph (SEM) of the shell of the foraminiferan Orbulina sp. — Stock Photo
    Coloured scanning electron micrograph (SEM) of the shell of the foraminiferan Orbulina sp.
    Red blood cells — Stock Photo
    Red blood cells
    Coloured profile (side view) X-ray of a healthy breast. — Stock Photo
    Coloured profile (side view) X-ray of a healthy breast.
    Finger-like projections of the duodenum — Stock Photo
    Finger-like projections of the duodenum
    Eyelash follicle, coloured scanning electron micrograph (SEM). — Stock Photo
    Eyelash follicle, coloured scanning electron micrograph (SEM).
    Digital illustration of pollen grains on anther of Chinese hibiscus flower. — Stock Photo
    Digital illustration of pollen grains on anther of Chinese hibiscus flower.
    Finger-like projections of the duodenum — Stock Photo
    Finger-like projections of the duodenum
    Old church in English countryside — Stock Photo
    Old church in English countryside
    Vaccinia virus particle — Stock Photo
    Vaccinia virus particle
    Eyelash follicle, coloured scanning electron micrograph (SEM). — Stock Photo
    Eyelash follicle, coloured scanning electron micrograph (SEM).
    Kidney glomerulus and podocyte cells — Stock Photo
    Kidney glomerulus and podocyte cells
    Breast cancer screening — Stock Photo
    Breast cancer screening
    Crenated red blood cells — Stock Photo
    Crenated red blood cells
    Influenza viruses budding from host cell — Stock Photo
    Influenza viruses budding from host cell
    Blastocyst hollow ball of cells with fluid, digital illustration. — Stock Photo
    Blastocyst hollow ball of cells with fluid, digital illustration.