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    Lung tissue, coloured transmission electron micrograph (TEM). — Stock Photo
    Lung tissue, coloured transmission electron micrograph (TEM).
    Used surgical swab — Stock Photo
    Used surgical swab
    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
    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.
    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
    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
    Climbing lily pollen — Stock Photo
    Climbing lily pollen
    Phytoplankton diatom Coscinodiscus sp — Stock Photo
    Phytoplankton diatom Coscinodiscus sp
    Nanostructures formed on a tantalum surface — Stock Photo
    Nanostructures formed on a tantalum surface
    Horse chestnut pollen grain — Stock Photo
    Horse chestnut pollen grain
    Skeletal muscle fibres — Stock Photo
    Skeletal muscle fibres
    Sperm cells in seminiferous tubule — Stock Photo
    Sperm cells in seminiferous tubule
    Varicella zoster virus particle — Stock Photo
    Varicella zoster virus particle
    Stick insect foot — Stock Photo
    Stick insect foot
    Bird bone tissue — Stock Photo
    Bird bone tissue
    Surface of a fallopian tube — Stock Photo
    Surface of a fallopian tube
    Milkwort pollen grain — Stock Photo
    Milkwort pollen grain
    Vaccinia virus particle — Stock Photo
    Vaccinia virus particle
    Coiled proboscis of a moth — Stock Photo
    Coiled proboscis of a moth
    Pollen threads and brochosomes — Stock Photo
    Pollen threads and brochosomes
    Hyaline cartilage, a semi-rigid connective tissue — Stock Photo
    Hyaline cartilage, a semi-rigid connective tissue
    B-lymphocyte white blood cells — Stock Photo
    B-lymphocyte white blood cells
    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.
    Carcinoma cell, coloured transmission electron micrograph (TEM). — Stock Photo
    Carcinoma cell, coloured transmission electron micrograph (TEM).
    Red blood cells with fibrin — Stock Photo
    Red blood cells with fibrin
    Chlamydia bacteria, illustration — Stock Photo
    Chlamydia bacteria, illustration
    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.
    Plaque-forming bacteria, colored scanning electron micrograph. — Stock Photo
    Plaque-forming bacteria, colored scanning electron micrograph.
    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.
    Colored scanning electron micrograph of scales from silverfish insect living fossil. — Stock Photo
    Colored scanning electron micrograph of scales from silverfish insect living fossil.
    Ruptured venule running through fatty tissue — Stock Photo
    Ruptured venule running through fatty tissue
    Helicobacter pylori bacterium — Stock Photo
    Helicobacter pylori bacterium
    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.
    Wasp eye numerous lenses — Stock Photo
    Wasp eye numerous lenses
    Diatom eukaryotic algae — Stock Photo
    Diatom eukaryotic algae
    Pollen grains of a common daisy — Stock Photo
    Pollen grains of a common daisy
    Embryonic stem cells — Stock Photo
    Embryonic stem cells
    Varicella zoster virus particle — Stock Photo
    Varicella zoster virus particle
    Peripheral nerve. Black and white transmission electron micrograph (TEM) of a section through a small peripheral nerve. Myelin (dark rings) is an insulating fatty layer that surrounds the myelinated nerve fibres — Stock Photo
    Peripheral nerve. Black and white transmission electron micrograph (TEM) of a section through a small peripheral nerve. Myelin (dark rings) is an insulating fatty layer that surrounds the myelinated nerve fibres
    Leukaemia blood cells — Stock Photo
    Leukaemia blood cells
    Kidney glomerulus and podocyte cells — Stock Photo
    Kidney glomerulus and podocyte cells
    Weevil (Sitophilus sp.), coloured scanning electron micrograph (SEM). This weevil is a major agricultural pest. It primarily attacks stored grains and fruits, feeding on them with its often elongated snout, or rostrum — Stock Photo
    Weevil (Sitophilus sp.), coloured scanning electron micrograph (SEM). This weevil is a major agricultural pest. It primarily attacks stored grains and fruits, feeding on them with its often elongated snout, or rostrum
    Sporangium fungal cell with spores — Stock Photo
    Sporangium fungal cell with spores
    Hair shafts growing from human skin — Stock Photo
    Hair shafts growing from human skin
    Blood clot or thrombus — Stock Photo
    Blood clot or thrombus
    Activated platelet cells — Stock Photo
    Activated platelet cells
    Campylobacter jejuni bacteria — Stock Photo
    Campylobacter jejuni bacteria
    Feet bacteria. Coloured scanning electron micrograph (SEM) of bacteria cultured from between toes of foot — Stock Photo
    Feet bacteria. Coloured scanning electron micrograph (SEM) of bacteria cultured from between toes of foot
    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.
    Fractured bladder stone — Stock Photo
    Fractured bladder stone
    Immature dog sperm — Stock Photo
    Immature dog sperm
    Coloured scanning electron micrograph of tardigrade water bear. — Stock Photo
    Coloured scanning electron micrograph of tardigrade water bear.
    Colored scanning electron micrograph of osteosarcoma bone cancer cell. — Stock Photo
    Colored scanning electron micrograph of osteosarcoma bone cancer cell.
    Surface of a fallopian tube — Stock Photo
    Surface of a fallopian tube
    Fly head anatomy — Stock Photo
    Fly head anatomy
    Earthworm coloured scanning electron micrograph — Stock Photo
    Earthworm coloured scanning electron micrograph
    Dense connective tissue, coloured scanning electron micrograph (SEM). — Stock Photo
    Dense connective tissue, coloured scanning electron micrograph (SEM).
    Sperm cells in seminiferous tubules — Stock Photo
    Sperm cells in seminiferous tubules
    Micrograph of tendon fibres — Stock Photo
    Micrograph of tendon fibres
    Influenza viruses and host cell — Stock Photo
    Influenza viruses and host cell