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    Colored scanning electron micrograph of variety of yeast species growing in larval tunnel of codling moth Cydia pomonella in mature apple. — Stock Photo
    Colored scanning electron micrograph of variety of yeast species growing in larval tunnel of codling moth Cydia pomonella in mature apple.
    Hair follicles of human skin — Stock Photo
    Hair follicles of human skin
    Coloured scanning electron micrograph (SEM) of Asbestos fiberschrysotile type. — Stock Photo
    Coloured scanning electron micrograph (SEM) of Asbestos fiberschrysotile type.
    Ankle of patient with osteoarthritis — Stock Photo
    Ankle of patient with osteoarthritis
    African Penguin on Boulder Beach, False Bay, Western Cape, South Africa — Stock Photo
    African Penguin on Boulder Beach, False Bay, Western Cape, South Africa
    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.
    Colored X-ray of section through thoracic spine of senior male patient with ankylosing spondylitis with severe degeneration of lower thoracic spine. — Stock Photo
    Colored X-ray of section through thoracic spine of senior male patient with ankylosing spondylitis with severe degeneration of lower thoracic spine.
    Colored scanning electron micrograph image of tooth dentine, mineralised connective tissue found under tooth enamel. — Stock Photo
    Colored scanning electron micrograph image of tooth dentine, mineralised connective tissue found under tooth enamel.
    Striated muscle. Coloured transmission electron micrograph (TEM) of a longitudinal section through striated skeletal muscle. The striated banding-pattern of the muscle fibrils is seen — Stock Photo
    Striated muscle. Coloured transmission electron micrograph (TEM) of a longitudinal section through striated skeletal muscle. The striated banding-pattern of the muscle fibrils is seen
    Trendy homosexual man with long nails in ornamental shirt looking away while squatting on pavement against wall — Stock Photo
    Trendy homosexual man with long nails in ornamental shirt looking away while squatting on pavement against wall
    Conceptual illustration of chicken eggs in carton and magnification of bacteria of food-borne infection on white background. — Stock Photo
    Conceptual illustration of chicken eggs in carton and magnification of bacteria of food-borne infection on white background.
    Gram negative Calymmatobacterium sp. — Stock Photo
    Gram negative Calymmatobacterium sp.
    Athletes Village for 2010 Winter Olympic Games at sunset in Vancouver, British Columbia, Canada — Stock Photo
    Athletes Village for 2010 Winter Olympic Games at sunset in Vancouver, British Columbia, Canada
    House dust mites — Stock Photo
    House dust mites
    Coloured scanning electron micrograph of breast cancer cells. — Stock Photo
    Coloured scanning electron micrograph of breast cancer cells.
    Resting T lymphocytes. Coloured scanning electron micrograph (SEM) of resting T lymphocytes from a human blood sample. T lymphocytes, or T cells, are a type of white blood cell and components of the body's immune system — Stock Photo
    Resting T lymphocytes. Coloured scanning electron micrograph (SEM) of resting T lymphocytes from a human blood sample. T lymphocytes, or T cells, are a type of white blood cell and components of the body's immune system
    Leech, coloured scanning electron micrograph (SEM). — Stock Photo
    Leech, coloured scanning electron micrograph (SEM).
    Colored scanning electron micrograph of human red blood cells erythrocytes, white blood cells leukocytes and platelet thrombocyte. — Stock Photo
    Colored scanning electron micrograph of human red blood cells erythrocytes, white blood cells leukocytes and platelet thrombocyte.
    Bacteria forming Dental plaque — Stock Photo
    Bacteria forming Dental plaque
    Giardia lamblia, a protozoan (cyst stage) found in water contaminated by animal faeces, coloured scanning electron micrograph (SEM). — Stock Photo
    Giardia lamblia, a protozoan (cyst stage) found in water contaminated by animal faeces, coloured scanning electron micrograph (SEM).
    Stagnant water bacteria — Stock Photo
    Stagnant water bacteria
    Zika virus particles — Stock Photo
    Zika virus particles
    Fisherman holding fresh caught striper fish, Boston harbour. Boston, Massachusetts, United States of America — Stock Photo
    Fisherman holding fresh caught striper fish, Boston harbour. Boston, Massachusetts, United States of America
    Milkwort pollen grain — Stock Photo
    Milkwort pollen grain
    Colored computed tomography scan of section through brain of senior male patient with dementia. — Stock Photo
    Colored computed tomography scan of section through brain of senior male patient with dementia.
    Fractured myelinated nerve fibres — Stock Photo
    Fractured myelinated nerve fibres
    Colored computed tomography scan of brain section of senior female patient with glioblastoma brain cancer. — Stock Photo
    Colored computed tomography scan of brain section of senior female patient with glioblastoma brain cancer.
    Human hair shafts, digital illustration. — Stock Photo
    Human hair shafts, digital illustration.
    Black colleagues examining denture in laboratory — Stock Photo
    Black colleagues examining denture in laboratory
    Dentures on table against white background. — Stock Photo
    Dentures on table against white background.
    Bougainvillea pollen grain — Stock Photo
    Bougainvillea pollen grain
    Colored scanning electron micrograph of predatory ciliate protozoan Loxophyllum. — Stock Photo
    Colored scanning electron micrograph of predatory ciliate protozoan Loxophyllum.
    Colored scanning electron micrograph of white blood cells and single platelet. — Stock Photo
    Colored scanning electron micrograph of white blood cells and single platelet.
    Briefcase with various items, coloured X-ray. — Stock Photo
    Briefcase with various items, coloured X-ray.
    Pollen grains of a common daisy — Stock Photo
    Pollen grains of a common daisy
    Coloured scanning electron micrograph of fresh water centric diatoms frustules type of algae. — Stock Photo
    Coloured scanning electron micrograph of fresh water centric diatoms frustules type of algae.
    Roquefort cheese and digital illustration of fungus Penicillium roqueforti. — Stock Photo
    Roquefort cheese and digital illustration of fungus Penicillium roqueforti.
    Human silhouette with Pneumocystis pneumonia and close-up of fungus spores. — Stock Photo
    Human silhouette with Pneumocystis pneumonia and close-up of fungus spores.
    Low angle of happy African American woman with dreadlocks and bearded man smiling and brushing false teeth during work in lab — Stock Photo
    Low angle of happy African American woman with dreadlocks and bearded man smiling and brushing false teeth during work in lab
    Mature virus and budding release of HIV — Stock Photo
    Mature virus and budding release of HIV
    Plaque-forming bacteria — Stock Photo
    Plaque-forming bacteria
    Eyelash follicle, coloured scanning electron micrograph (SEM). — Stock Photo
    Eyelash follicle, coloured scanning electron micrograph (SEM).
    Intestinal microvilli. Coloured scanning electron micrograph (SEM) of microvilli from the small intestine. These tiny structures form a dense brush-like covering on the absorptive surfaces of the cells lining the small intestine — Stock Photo
    Intestinal microvilli. Coloured scanning electron micrograph (SEM) of microvilli from the small intestine. These tiny structures form a dense brush-like covering on the absorptive surfaces of the cells lining the small intestine
    Three dinoflagellates (blue), coloured scanning electron micrograph (SEM). Dinoflagellates are unicellular protozoans. — Stock Photo
    Three dinoflagellates (blue), coloured scanning electron micrograph (SEM). Dinoflagellates are unicellular protozoans.
    Cultured cancer cells — Stock Photo
    Cultured cancer cells
    Macrophage. Coloured transmission electron micrograph (TEM) of a macrophage cell. The cell's nucleus is red. Mitochondria (orange) in the cell's cytoplasm produce energy for the cell. Lysosomes (black) contain enzymes for digesting foreign particles. — Stock Photo
    Macrophage. Coloured transmission electron micrograph (TEM) of a macrophage cell. The cell's nucleus is red. Mitochondria (orange) in the cell's cytoplasm produce energy for the cell. Lysosomes (black) contain enzymes for digesting foreign particles.
    Colored scanning electron micrograph of surface of human fallopian tube with epithelium of columnar cells with cilia. — Stock Photo
    Colored scanning electron micrograph of surface of human fallopian tube with epithelium of columnar cells with cilia.
    Branch with multiple yellow flowers and buds, coloured X-ray. — Stock Photo
    Branch with multiple yellow flowers and buds, coloured X-ray.
    Colored computed tomography scan of section through brain of senior male patient with dementia. — Stock Photo
    Colored computed tomography scan of section through brain of senior male patient with dementia.
    Heart capillary with red blood cell between muscle fibres, colored scanning electron micrograph. — Stock Photo
    Heart capillary with red blood cell between muscle fibres, colored scanning electron micrograph.
    Blastocyst hollow ball of cells with fluid, digital illustration. — Stock Photo
    Blastocyst hollow ball of cells with fluid, digital illustration.
    Person painting prosthetic tooth, close-up. — Stock Photo
    Person painting prosthetic tooth, close-up.
    Bundle of flowers (Dianthus sp), coloured X-ray. — Stock Photo
    Bundle of flowers (Dianthus sp), coloured X-ray.
    Colored scanning electron micrograph of breast cancer cell. — Stock Photo
    Colored scanning electron micrograph of breast cancer cell.
    Coloured X-ray of arthritic knees — Stock Photo
    Coloured X-ray of arthritic knees
    Heart capillary with red blood cell between muscle fibres, colored scanning electron micrograph. — Stock Photo
    Heart capillary with red blood cell between muscle fibres, colored scanning electron micrograph.
    Man holding redfish. Venice, louisiana, united states of america — Stock Photo
    Man holding redfish. Venice, louisiana, united states of america
    Total hip replacement — Stock Photo
    Total hip replacement
    Fractured arm, coloured X-ray. — Stock Photo
    Fractured arm, coloured X-ray.
    Scanning electron micrograph of dermestid beetle head. — Stock Photo
    Scanning electron micrograph of dermestid beetle head.