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    Colored scanning electron micrograph showing urethral epithelium of urethra. — Stock Photo
    Colored scanning electron micrograph showing urethral epithelium of urethra.
    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.
    Human cell infected with Simian Immunodeficiency Virus from sooty mangabey, colored scanning electron micrograph. — Stock Photo
    Human cell infected with Simian Immunodeficiency Virus from sooty mangabey, colored scanning electron micrograph.
    Fungal cells showing sporangium — Stock Photo
    Fungal cells showing sporangium
    Coloured scanning electron micrograph (SEM) of hooks from a hooks and loops fastener, a two-sheet material used to fasten clothes and other fabrics. — Stock Photo
    Coloured scanning electron micrograph (SEM) of hooks from a hooks and loops fastener, a two-sheet material used to fasten clothes and other fabrics.
    Intestinal microvilli. Coloured transmission electron micrograph (TEM) of a section through microvilli from the small intestine. These tiny structures (cyan) form a dense brush-like covering on the absorptive surfaces of the cells — Stock Photo
    Intestinal microvilli. Coloured transmission electron micrograph (TEM) of a section through microvilli from the small intestine. These tiny structures (cyan) form a dense brush-like covering on the absorptive surfaces of the cells
    Dust mite parasite, microscopic digital illustration. — Stock Photo
    Dust mite parasite, microscopic digital illustration.
    Coloured scanning electron micrograph of bacteria cultured from used dishcloth. — Stock Photo
    Coloured scanning electron micrograph of bacteria cultured from used dishcloth.
    Human red blood cells trapped in a fibrin blood clot, coloured scanning electron micrograph (SEM). — Stock Photo
    Human red blood cells trapped in a fibrin blood clot, coloured scanning electron micrograph (SEM).
    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.
    Dental floss with cheek cells — Stock Photo
    Dental floss with cheek cells
    Colored scanning electron micrograph of breast cancer cell. — Stock Photo
    Colored scanning electron micrograph of breast cancer cell.
    Escherichia coli on the surface of human skin — Stock Photo
    Escherichia coli on the surface of human skin
    Lychnocanoma radiolarian shell — Stock Photo
    Lychnocanoma radiolarian shell
    Oligodendrocyte cell structure — Stock Photo
    Oligodendrocyte cell structure
    Composite image of nasal epithelium and pollen. Coloured Scanning Electron Micrograph (SEM) of the surface of nasal epithelium with inhaled in pollen. — Stock Photo
    Composite image of nasal epithelium and pollen. Coloured Scanning Electron Micrograph (SEM) of the surface of nasal epithelium with inhaled in pollen.
    Coiled proboscis of a moth — Stock Photo
    Coiled proboscis of a moth
    Snake red blood cells. Coloured scanning electron micrograph (SEM) of whole and fractured red blood cells (erythrocytes, red) in a small blood vessel of a snake — Stock Photo
    Snake red blood cells. Coloured scanning electron micrograph (SEM) of whole and fractured red blood cells (erythrocytes, red) in a small blood vessel of a snake
    Coloured scanning electron micrograph (SEM) of Coal from the ship Titanic. — Stock Photo
    Coloured scanning electron micrograph (SEM) of Coal from the ship Titanic.
    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.
    Scanning electron micrograph of bacterial culture from sputum. — Stock Photo
    Scanning electron micrograph of bacterial culture from sputum.
    Wasp eye numerous lenses — Stock Photo
    Wasp eye numerous lenses
    Staphylococcus aureus coccoid bacteria, colored scanning electron micrograph. — Stock Photo
    Staphylococcus aureus coccoid bacteria, colored scanning electron micrograph.
    Villi from the lining of the jejunum — Stock Photo
    Villi from the lining of the jejunum
    Triceratium sp. diatom algae — Stock Photo
    Triceratium sp. diatom algae
    Pollen grains from a bellflower — Stock Photo
    Pollen grains from a bellflower
    Human sperm cell, coloured scanning electron micrograph (SEM). — Stock Photo
    Human sperm cell, coloured scanning electron micrograph (SEM).
    Clothes moth wing scales — Stock Photo
    Clothes moth wing scales
    Dust mite parasite, microscopic digital illustration. — Stock Photo
    Dust mite parasite, microscopic digital illustration.
    Coloured scanning electron micrograph of bacteria cultured from mobile phone. — Stock Photo
    Coloured scanning electron micrograph of bacteria cultured from mobile phone.
    Sperm cells in seminiferous tubules — Stock Photo
    Sperm cells in seminiferous tubules
    Kidney glomeruli, coloured scanning electron micrograph (SEM). — Stock Photo
    Kidney glomeruli, coloured scanning electron micrograph (SEM).
    Triceratium sp. diatom algae — Stock Photo
    Triceratium sp. diatom algae
    Platelets in blood vessel — Stock Photo
    Platelets in blood vessel
    Intestinal microvilli. Coloured transmission electron micrograph (TEM) of a section through microvilli from the small intestine. These tiny structures (cyan) form a dense brush-like covering on the absorptive surfaces of the cells — Stock Photo
    Intestinal microvilli. Coloured transmission electron micrograph (TEM) of a section through microvilli from the small intestine. These tiny structures (cyan) form a dense brush-like covering on the absorptive surfaces of the cells
    Respiratory syncytial virus — Stock Photo
    Respiratory syncytial virus
    Dust mite parasite, microscopic digital illustration. — Stock Photo
    Dust mite parasite, microscopic digital illustration.
    Dead bluebottle fly — Stock Photo
    Dead bluebottle fly
    Coloured scanning electron micrograph of cultured cancer cell from human cervix showing numerous microvilli. — Stock Photo
    Coloured scanning electron micrograph of cultured cancer cell from human cervix showing numerous microvilli.
    Chlamydia bacteria, illustration — Stock Photo
    Chlamydia bacteria, illustration
    Methicillin-resistant Staphylococcus aureus — Stock Photo
    Methicillin-resistant Staphylococcus aureus
    Prostate cancer cells, coloured scanning electron micrograph. — Stock Photo
    Prostate cancer cells, coloured scanning electron micrograph.
    Kidney glomeruli. Coloured scanning electron micrograph (SEM) of a resin cast of glomeruli capillaries and the larger blood vessels supplying them with blood — Stock Photo
    Kidney glomeruli. Coloured scanning electron micrograph (SEM) of a resin cast of glomeruli capillaries and the larger blood vessels supplying them with blood
    Kiwi fruit (Actinidia deliciosa) pollen grain, coloured scanning electron micrograph (SEM). — Stock Photo
    Kiwi fruit (Actinidia deliciosa) pollen grain, coloured scanning electron micrograph (SEM).
    Blade of grass with a serrated edge — Stock Photo
    Blade of grass with a serrated edge
    Pancreatic islet cells. Colored transmission electron micrograph (TEM) of a section through pancreas tissue, showing cells known as Islets of Langerhans. These cells occur in distinct ovoid clusters numbering about 1 million in humans — Stock Photo
    Pancreatic islet cells. Colored transmission electron micrograph (TEM) of a section through pancreas tissue, showing cells known as Islets of Langerhans. These cells occur in distinct ovoid clusters numbering about 1 million in humans
    Embryonic stem cells — Stock Photo
    Embryonic stem cells
    Helicobacter pylori bacterium — Stock Photo
    Helicobacter pylori bacterium
    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.
    Human hair, coloured scanning electron micrograph (SEM). Magnification: x550 when printed at 10 centimetres wide. — Stock Photo
    Human hair, coloured scanning electron micrograph (SEM). Magnification: x550 when printed at 10 centimetres wide.
    Pyoderma skin disease — Stock Photo
    Pyoderma skin disease
    Lactating breast tissue — Stock Photo
    Lactating breast tissue
    Surface of a fallopian tube — Stock Photo
    Surface of a fallopian tube
    Dividing prostate gland cancer cells, colored scanning electron micrograph. — Stock Photo
    Dividing prostate gland cancer cells, colored scanning electron micrograph.
    Bird bone tissue — Stock Photo
    Bird bone tissue
    Coloured scanning electron micrograph of breast cancer cell. — Stock Photo
    Coloured scanning electron micrograph of breast cancer cell.
    Coloured scanning electron micrograph of cultured cancer cell from human cervix showing numerous microvilli. — Stock Photo
    Coloured scanning electron micrograph of cultured cancer cell from human cervix showing numerous microvilli.
    Trachea (wind pipe) lining, coloured scanning electron micrograph (SEM). — Stock Photo
    Trachea (wind pipe) lining, coloured scanning electron micrograph (SEM).
    Colored scanning electron micrograph of pollen grains from Nymphaeaceae water lily flower. — Stock Photo
    Colored scanning electron micrograph of pollen grains from Nymphaeaceae water lily flower.
    Macrophage. Coloured transmission electron micrograph (TEM) of a macrophage cell. The cell's nucleus is blue. Mitochondria (cyan)) in the cell's cytoplasm produce energy for the cell. Lysosomes (red) contain enzymes for digesting foreign particles. M — Stock Photo
    Macrophage. Coloured transmission electron micrograph (TEM) of a macrophage cell. The cell's nucleus is blue. Mitochondria (cyan)) in the cell's cytoplasm produce energy for the cell. Lysosomes (red) contain enzymes for digesting foreign particles. M