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    Soil bacteria, coloured scanning electron micrograph. — Stock Photo
    Soil bacteria, coloured scanning electron micrograph.
    False-colour scanning electron micrograph of a section of healthy lung tissue, showing the microscopic air sacs (alveoli) where gas exchange takes place. — Stock Photo
    False-colour scanning electron micrograph of a section of healthy lung tissue, showing the microscopic air sacs (alveoli) where gas exchange takes place.
    Pollen threads and brochosomes — Stock Photo
    Pollen threads and brochosomes
    Colored digital illustration of parasitic dust mites. — Stock Photo
    Colored digital illustration of parasitic dust mites.
    Trachea (wind pipe) lining, coloured scanning electron micrograph (SEM). — Stock Photo
    Trachea (wind pipe) lining, coloured scanning electron micrograph (SEM).
    Cannabis plant. Coloured scanning electron micrograph (SEM) of the surface of a cannabis (Cannabis sativa) plant. The pointed hairs are called lithocyst cells. They contain cystoliths (calcium carbonate crystals) — Stock Photo
    Cannabis plant. Coloured scanning electron micrograph (SEM) of the surface of a cannabis (Cannabis sativa) plant. The pointed hairs are called lithocyst cells. They contain cystoliths (calcium carbonate crystals)
    Fossilised fragment of a coccolithotrope skeleton — Stock Photo
    Fossilised fragment of a coccolithotrope skeleton
    Pancreas tissue. Transmission electron micrograph (TEM) of part of the exocrine pancreas. Seen here are zymogen granules and cell nuclei. In the image the endoplasmic reticulum that fills the cytoplasm is clearly visible. — Stock Photo
    Pancreas tissue. Transmission electron micrograph (TEM) of part of the exocrine pancreas. Seen here are zymogen granules and cell nuclei. In the image the endoplasmic reticulum that fills the cytoplasm is clearly visible.
    Coloured scanning electron micrograph (SEM) of Pediculus humanus capitis, human head lice. P. humanus is divided into two subspecies; the head louse P. humanus capitis and the body louse P. humanus corporis — Stock Photo
    Coloured scanning electron micrograph (SEM) of Pediculus humanus capitis, human head lice. P. humanus is divided into two subspecies; the head louse P. humanus capitis and the body louse P. humanus corporis
    Tendon, coloured scanning electron micrograph (SEM), showing bundles of collagen fibres. The parallel alignment of the fibres make tendons inelastic but flexible. Tendons attach muscle to bone — Stock Photo
    Tendon, coloured scanning electron micrograph (SEM), showing bundles of collagen fibres. The parallel alignment of the fibres make tendons inelastic but flexible. Tendons attach muscle to bone
    Colored scanning electron micrograph of predatory ciliate protozoan Loxophyllum. — Stock Photo
    Colored scanning electron micrograph of predatory ciliate protozoan Loxophyllum.
    Marine pennate diatom frustule — Stock Photo
    Marine pennate diatom frustule
    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.
    Pink colored digital illustration of parasitic dust mites. — Stock Photo
    Pink colored digital illustration of parasitic dust mites.
    Dead bluebottle fly — Stock Photo
    Dead bluebottle fly
    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.
    Dendritic cells of immune system — Stock Photo
    Dendritic cells of immune system
    Coloured scanning electron micrograph of the rod-shaped, Gram-negative bacteria Escherichia coli, commonly known as E. coli — Stock Photo
    Coloured scanning electron micrograph of the rod-shaped, Gram-negative bacteria Escherichia coli, commonly known as E. coli
    Coloured scanning electron micrograph of macrophage white blood cell. — Stock Photo
    Coloured scanning electron micrograph of macrophage white blood cell.
    Bacillus megaterium bacterial colony, coloured scanning electron micrograph. — Stock Photo
    Bacillus megaterium bacterial colony, coloured scanning electron micrograph.
    Leukaemia blood cells — Stock Photo
    Leukaemia blood cells
    Dust mite parasite, microscopic digital illustration. — Stock Photo
    Dust mite parasite, microscopic digital illustration.
    Human tooth fractured enamel, coloured scanning electron micrograph (SEM). — Stock Photo
    Human tooth fractured enamel, coloured scanning electron micrograph (SEM).
    Coloured scanning electron micrograph of breast cancer cells. — Stock Photo
    Coloured scanning electron micrograph of breast cancer cells.
    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.
    Red blood cells and platelets — Stock Photo
    Red blood cells and platelets
    Dividing prostate cancer cells, coloured scanning electron micrograph. — Stock Photo
    Dividing prostate cancer cells, coloured scanning electron micrograph.
    House dust mites — Stock Photo
    House dust mites
    Cat flea. Coloured scanning electron micrograph (SEM) of a cat flea (Ctenocephalides felis). Its body is laterally-flattened to allow it to move easily through the fur of its cat host — Stock Photo
    Cat flea. Coloured scanning electron micrograph (SEM) of a cat flea (Ctenocephalides felis). Its body is laterally-flattened to allow it to move easily through the fur of its cat host
    Skin cancer cell — Stock Photo
    Skin cancer cell
    Dust mite parasite, microscopic digital illustration. — Stock Photo
    Dust mite parasite, microscopic digital illustration.
    Human blood cells — Stock Photo
    Human blood cells
    Staphylococcus aureus coccoid bacteria, colored scanning electron micrograph. — Stock Photo
    Staphylococcus aureus coccoid bacteria, colored scanning electron micrograph.
    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
    Silica wall of a diatom — Stock Photo
    Silica wall of a diatom
    Ruptured venule running through fatty tissue — Stock Photo
    Ruptured venule running through fatty tissue
    Hair shafts growing from human skin — Stock Photo
    Hair shafts growing from human skin
    Colored scanning electron micrograph of bundles of sensory cilia cells in macula utriculi within labyrinth of human inner ear. — Stock Photo
    Colored scanning electron micrograph of bundles of sensory cilia cells in macula utriculi within labyrinth of human inner ear.
    Illustration of Lactobacillus colony — Stock Photo
    Illustration of Lactobacillus colony
    Colored scanning electron micrograph of human mesenchymal stem cell. — Stock Photo
    Colored scanning electron micrograph of human mesenchymal stem cell.
    Colored scanning electron micrograph of Streptococcus mutans anaerobic bacteria in normal bacteria flora of mouth. — Stock Photo
    Colored scanning electron micrograph of Streptococcus mutans anaerobic bacteria in normal bacteria flora of mouth.
    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.
    Deformed sperm cell — Stock Photo
    Deformed sperm cell
    Coloured scanning electron micrograph (SEM) of a human red blood cell (erythrocyte, red) and a white blood cell (leucoocyte, blue). — Stock Photo
    Coloured scanning electron micrograph (SEM) of a human red blood cell (erythrocyte, red) and a white blood cell (leucoocyte, blue).
    Leukaemia blood cells — Stock Photo
    Leukaemia blood cells
    Fungal cells and sporangia — Stock Photo
    Fungal cells and sporangia
    Mobile phone speaker, colored scanning electron micrograph. — Stock Photo
    Mobile phone speaker, colored scanning electron micrograph.
    Colored digital illustration of parasitic dust mites. — Stock Photo
    Colored digital illustration of parasitic dust mites.
    Electron micrograph of dental plaque — Stock Photo
    Electron micrograph of dental plaque
    Colored scanning electron micrograph of mains cable damaged by mouse teeth. — Stock Photo
    Colored scanning electron micrograph of mains cable damaged by mouse teeth.
    Colored scanning electron micrograph of stem cell-derived motor neuron cell. — Stock Photo
    Colored scanning electron micrograph of stem cell-derived motor neuron cell.
    Plaque-forming bacteria — Stock Photo
    Plaque-forming bacteria
    Coloured scanning electron micrograph (SEM) of rods (yellow) and cones (green) in the retina of the eye. — Stock Photo
    Coloured scanning electron micrograph (SEM) of rods (yellow) and cones (green) in the retina of the eye.
    Centric fossil diatom frustule — Stock Photo
    Centric fossil diatom frustule
    Bottlebrush pollen grain — Stock Photo
    Bottlebrush pollen grain
    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.
    Scanning electron micrograph (SEM) of a PC12 neurone in culture. — Stock Photo
    Scanning electron micrograph (SEM) of a PC12 neurone in culture.
    Human red blood cells — Stock Photo
    Human red blood cells
    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.
    Escherichia coli bacteria on gecko tongue — Stock Photo
    Escherichia coli bacteria on gecko tongue