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    Climbing lily pollen — Stock Photo
    Climbing lily pollen
    Mixed oral bacteria — Stock Photo
    Mixed oral bacteria
    Scanning electron micrograph (SEM) of a PC12 neurone in culture. — Stock Photo
    Scanning electron micrograph (SEM) of a PC12 neurone in culture.
    Leech, coloured scanning electron micrograph (SEM). — Stock Photo
    Leech, coloured scanning electron micrograph (SEM).
    Skin cancer cell — Stock Photo
    Skin cancer cell
    Breast cancer screening — Stock Photo
    Breast cancer screening
    Coloured scanning electron micrograph (SEM) of a fractured bile duct. — Stock Photo
    Coloured scanning electron micrograph (SEM) of a fractured bile duct.
    Stunning unique infra red landscape — Stock Photo
    Stunning unique infra red landscape
    Embryonic stem cells — Stock Photo
    Embryonic stem cells
    Crypts of Lieberkuhn. Light micrograph (LM). Crypts of Lieberkuhn of the colon shown in cross section. Crypts are long blind-ending tube-like extensions of the surface epithelial lining of the gut — Stock Photo
    Crypts of Lieberkuhn. Light micrograph (LM). Crypts of Lieberkuhn of the colon shown in cross section. Crypts are long blind-ending tube-like extensions of the surface epithelial lining of the gut
    Breast cancer screening — Stock Photo
    Breast cancer screening
    Passion flower pollen — Stock Photo
    Passion flower pollen
    Vaccinia virus particle — Stock Photo
    Vaccinia virus particle
    Od shaped bacteria Tragelaphus — Stock Photo
    Od shaped bacteria Tragelaphus
    Colored scanning electron micrograph of lymphoma cell showing early apoptotic change. — Stock Photo
    Colored scanning electron micrograph of lymphoma cell showing early apoptotic change.
    Mycobacterium smegmatis bacteria — Stock Photo
    Mycobacterium smegmatis bacteria
    Dog hair, coloured scanning electron micrograph (SEM).In dogs several hairs emerge from a single follicle. — Stock Photo
    Dog hair, coloured scanning electron micrograph (SEM).In dogs several hairs emerge from a single follicle.
    Stunning unique infra red landscape — Stock Photo
    Stunning unique infra red landscape
    Colored angiogram of carotid artery in neck of mature patient. — Stock Photo
    Colored angiogram of carotid artery in neck of mature patient.
    Cardiac muscle from a healthy heart — Stock Photo
    Cardiac muscle from a healthy heart
    Pollen threads and brochosomes — Stock Photo
    Pollen threads and brochosomes
    Kidney glomerulus and podocyte cells — Stock Photo
    Kidney glomerulus and podocyte cells
    Gall bladder. Coloured scanning electron micrograph (SEM) of the surface of a gall bladder. This mucosa lining is made up of cuboidal epithelial cells (yellow) — Stock Photo
    Gall bladder. Coloured scanning electron micrograph (SEM) of the surface of a gall bladder. This mucosa lining is made up of cuboidal epithelial cells (yellow)
    Od shaped bacteria Tragelaphus — Stock Photo
    Od shaped bacteria Tragelaphus
    House dust mites — Stock Photo
    House dust mites
    Human hair shafts, digital illustration. — Stock Photo
    Human hair shafts, digital illustration.
    Eyelash follicle, coloured scanning electron micrograph (SEM). — Stock Photo
    Eyelash follicle, coloured scanning electron micrograph (SEM).
    Abstract coloured scanning electron micrograph of crystalline surface of fractured gallstone. — Stock Photo
    Abstract coloured scanning electron micrograph of crystalline surface of fractured gallstone.
    Pollen grains from a bellflower — Stock Photo
    Pollen grains from a bellflower
    Digital artwork of T-lymphocyte cells attacking red cancer cell. — Stock Photo
    Digital artwork of T-lymphocyte cells attacking red cancer cell.
    Red blood cells — Stock Photo
    Red blood cells
    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.
    Brain with aneurysm in the middle cerebral artery — Stock Photo
    Brain with aneurysm in the middle cerebral artery
    Villi from the lining of the jejunum — Stock Photo
    Villi from the lining of the jejunum
    Sperm cell in a fallopian tube — Stock Photo
    Sperm cell in a fallopian tube
    Aerial view of amazing cityscape of Vancouver, British Columbia, Canada — Stock Photo
    Aerial view of amazing cityscape of Vancouver, British Columbia, Canada
    Influenza viruses and host cell — Stock Photo
    Influenza viruses and host cell
    Cape Pankof On Unimak Island — Stock Photo
    Cape Pankof On Unimak Island
    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.
    PC12 neurone in culture — Stock Photo
    PC12 neurone in culture
    Prosthetic knee joint — Stock Photo
    Prosthetic knee joint
    T lymphocyte cells attached to cancer cell — Stock Photo
    T lymphocyte cells attached to cancer cell
    Coloured frontal X-ray of an artificial knee joint (white). — Stock Photo
    Coloured frontal X-ray of an artificial knee joint (white).
    Skin cancer cell — Stock Photo
    Skin cancer cell
    Pyoderma skin disease — Stock Photo
    Pyoderma skin disease
    Coloured scanning electron micrograph (SEM) of a fractured bile duct. — Stock Photo
    Coloured scanning electron micrograph (SEM) of a fractured bile duct.
    T lymphocyte cells attached to cancer cell — Stock Photo
    T lymphocyte cells attached to cancer cell
    Sarcoptic mange mites eggs — Stock Photo
    Sarcoptic mange mites eggs
    Normal head and brain — Stock Photo
    Normal head and brain
    Blood clot structure — Stock Photo
    Blood clot structure
    Coloured scanning electron micrograph (SEM) of a section through healthy skin. — Stock Photo
    Coloured scanning electron micrograph (SEM) of a section through healthy skin.
    Coiled proboscis of a moth — Stock Photo
    Coiled proboscis of a moth
    Gram negative Calymmatobacterium sp. — Stock Photo
    Gram negative Calymmatobacterium sp.
    Heart pacemaker, X-ray — Stock Photo
    Heart pacemaker, X-ray
    Fractured myelinated nerve fibres — Stock Photo
    Fractured myelinated nerve fibres
    Chest, neck and head arteries — Stock Photo
    Chest, neck and head arteries
    Digital illustration of bacteria on tip of needle. — Stock Photo
    Digital illustration of bacteria on tip of needle.
    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.
    Surface of a fallopian tube — Stock Photo
    Surface of a fallopian tube
    Blastocyst hollow ball of cells with fluid, digital illustration. — Stock Photo
    Blastocyst hollow ball of cells with fluid, digital illustration.