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    Coloured scanning electron micrograph (SEM) of sensory hair cells in the cochlea of the inner ear. — Stock Photo
    Coloured scanning electron micrograph (SEM) of sensory hair cells in the cochlea of the inner ear.
    Cat flea head — Stock Photo
    Cat flea head
    Colored scanning electron micrograph of pollen grains from convolvulus flower. — Stock Photo
    Colored scanning electron micrograph of pollen grains from convolvulus flower.
    Heart strings strings — Stock Photo
    Heart strings strings
    Colored scanning electron micrograph of pollen grain cell from hollyhock hibiscus flower. — Stock Photo
    Colored scanning electron micrograph of pollen grain cell from hollyhock hibiscus flower.
    Scanning electron micrograph of dermestid beetle head. — Stock Photo
    Scanning electron micrograph of dermestid beetle head.
    Dense connective tissue, coloured scanning electron micrograph (SEM). — Stock Photo
    Dense connective tissue, coloured scanning electron micrograph (SEM).
    Gall bladder. Coloured scanning electron micrograph (SEM) of the surface of a gall bladder. This mucosa lining is made up of cuboidal epithelial cells (pink) — 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 (pink)
    Cultured cancer cells — Stock Photo
    Cultured cancer cells
    Scanning electron microscopy of DNA molecules and red and white blood cells. — Stock Photo
    Scanning electron microscopy of DNA molecules and red and white blood cells.
    Helicobacter pylori bacterium — Stock Photo
    Helicobacter pylori bacterium
    Didinium sp. ciliate protozoa, coloured scanning electron micrograph (SEM). These tiny single-celled organisms are found in freshwater and marine habitats. They are predatory organism, feeding on other ciliate protozoans, mainly Paramecium — Stock Photo
    Didinium sp. ciliate protozoa, coloured scanning electron micrograph (SEM). These tiny single-celled organisms are found in freshwater and marine habitats. They are predatory organism, feeding on other ciliate protozoans, mainly Paramecium
    Ant head. Coloured scanning electron micrograph (SEM) of the head of an ant (family Formicidae). showing its large compound eyes (blue) and jaws. Magnification: x50 when printed 10 centimetres wide. — Stock Photo
    Ant head. Coloured scanning electron micrograph (SEM) of the head of an ant (family Formicidae). showing its large compound eyes (blue) and jaws. Magnification: x50 when printed 10 centimetres wide.
    Intestinal brush border in small intestine showing numerous microvilli, colored transmission electron micrograph. — Stock Photo
    Intestinal brush border in small intestine showing numerous microvilli, colored transmission 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
    Fungal cells and sporangia — Stock Photo
    Fungal cells and sporangia
    Sporangium fungal cell with spores — Stock Photo
    Sporangium fungal cell with spores
    Crystalline lens of the eye — Stock Photo
    Crystalline lens of the eye
    Sapphire, SEM — Stock Photo
    Sapphire, SEM
    Bone cancer cells. Coloured scanning electron micrograph of osteosarcoma cancer cells. Osteosarcoma is an aggressive malignant neoplasm arising from primitive transformed mesenchymal cells — Stock Photo
    Bone cancer cells. Coloured scanning electron micrograph of osteosarcoma cancer cells. Osteosarcoma is an aggressive malignant neoplasm arising from primitive transformed mesenchymal cells
    Bacteria from a coin. Coloured scanning electron micrograph (SEM) of bacteria cultured from a english one pound coin — Stock Photo
    Bacteria from a coin. Coloured scanning electron micrograph (SEM) of bacteria cultured from a english one pound coin
    Didinium sp. ciliate protozoa, coloured scanning electron micrograph (SEM). These tiny single-celled organisms are found in freshwater and marine habitats — Stock Photo
    Didinium sp. ciliate protozoa, coloured scanning electron micrograph (SEM). These tiny single-celled organisms are found in freshwater and marine habitats
    Pollen threads and brochosomes — Stock Photo
    Pollen threads and brochosomes
    Fractured myelinated nerve fibres — Stock Photo
    Fractured myelinated nerve fibres
    Male sex cell — Stock Photo
    Male sex cell
    Marjoram (Origanum vilgare) leaf surface, coloured scanning electron micrograph (SEM). — Stock Photo
    Marjoram (Origanum vilgare) leaf surface, coloured scanning electron micrograph (SEM).
    Fungal cells with sporangia and spores — Stock Photo
    Fungal cells with sporangia and spores
    Mobile phone speaker, colored scanning electron micrograph. — Stock Photo
    Mobile phone speaker, colored scanning electron micrograph.
    Escherichia coli bacteria — Stock Photo
    Escherichia coli bacteria
    Venule. Coloured transmission electron micrograph (TEM). Venules are small veins that transport deoxygenated blood from the capillary beds to the veins. Endothelial cells line the entire circulatory system — Stock Photo
    Venule. Coloured transmission electron micrograph (TEM). Venules are small veins that transport deoxygenated blood from the capillary beds to the veins. Endothelial cells line the entire circulatory system
    Blood clotting in an ovarian follicle — Stock Photo
    Blood clotting in an ovarian follicle
    Bone cancer cells. Coloured scanning electron micrograph of osteosarcoma cancer cells. Osteosarcoma is an aggressive malignant neoplasm arising from primitive transformed mesenchymal cells — Stock Photo
    Bone cancer cells. Coloured scanning electron micrograph of osteosarcoma cancer cells. Osteosarcoma is an aggressive malignant neoplasm arising from primitive transformed mesenchymal cells
    Phlox pollen grain — Stock Photo
    Phlox pollen grain
    Osteoblasts. Colored transmission electron micrograph (TEM) of osteoblasts, bone-producing cells (purple and pink). They contain rough endoplasmic reticulum (RER), which produces, modifies and transports proteins, and nucleus — Stock Photo
    Osteoblasts. Colored transmission electron micrograph (TEM) of osteoblasts, bone-producing cells (purple and pink). They contain rough endoplasmic reticulum (RER), which produces, modifies and transports proteins, and nucleus
    Coloured scanning electron micrograph of surface of prostate cancer cells. — Stock Photo
    Coloured scanning electron micrograph of surface of prostate cancer cells.
    Cells of brewer yeast — Stock Photo
    Cells of brewer yeast
    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.
    External mineralised structures of coccolithophores — Stock Photo
    External mineralised structures of coccolithophores
    Blood clot or thrombus — Stock Photo
    Blood clot or thrombus
    Plankton. Coloured scanning electron micrograph (SEM) of plankton containing mainly Ceratium dinoflagellates. A few diatoms are also present. Dinoflagellates are unicellular protozoans — Stock Photo
    Plankton. Coloured scanning electron micrograph (SEM) of plankton containing mainly Ceratium dinoflagellates. A few diatoms are also present. Dinoflagellates are unicellular protozoans
    Colored scanning electron micrograph of Liposcelis divinatorius booklouse. — Stock Photo
    Colored scanning electron micrograph of Liposcelis divinatorius booklouse.
    Micrograph of tendon fibres — Stock Photo
    Micrograph of tendon fibres
    Streptomyces coelicoflavus bacteria — Stock Photo
    Streptomyces coelicoflavus bacteria
    Milkwort pollen grain — Stock Photo
    Milkwort pollen grain
    Acinar pancreatic cell — Stock Photo
    Acinar pancreatic cell
    Activated platelet cells — Stock Photo
    Activated platelet cells
    B-lymphocyte white blood cells — Stock Photo
    B-lymphocyte white blood cells
    Red blood cells with fibrin — Stock Photo
    Red blood cells with fibrin
    Asparagus beetle head — Stock Photo
    Asparagus beetle head
    Colored scanning electron micrograph of metal nanoparticles formed by laser ablation. — Stock Photo
    Colored scanning electron micrograph of metal nanoparticles formed by laser ablation.
    Lining of the small intestine — Stock Photo
    Lining of the small intestine
    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
    Stomach lining. Coloured scanning electron micrograph (SEM) of the glandular lining (mucosa) of the stomach. The gastric mucosa secretes the digestive enzymes and hydrochloric acid — Stock Photo
    Stomach lining. Coloured scanning electron micrograph (SEM) of the glandular lining (mucosa) of the stomach. The gastric mucosa secretes the digestive enzymes and hydrochloric acid
    Schizosaccharomyces pombe yeast — Stock Photo
    Schizosaccharomyces pombe yeast
    Hair shafts growing from human skin — Stock Photo
    Hair shafts growing from human skin
    Escherichia coli bacteria — Stock Photo
    Escherichia coli bacteria
    Scanning electron microscopy of DNA molecules and red and white blood cells. — Stock Photo
    Scanning electron microscopy of DNA molecules and red and white blood cells.
    Gastrotrich eggs. Coloured scanning electron micrograph (SEM) of a Chaetonotus sp. gastrotrich eggs. Gastrotrichs are microscopic, worm-like animals found in both freshwater and marine habitats — Stock Photo
    Gastrotrich eggs. Coloured scanning electron micrograph (SEM) of a Chaetonotus sp. gastrotrich eggs. Gastrotrichs are microscopic, worm-like animals found in both freshwater and marine habitats
    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 activated T lymphocyte from human blood sample. — Stock Photo
    Colored scanning electron micrograph of activated T lymphocyte from human blood sample.