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    Waterlily pollen (Nymphaea mexicana), coloured scanning electron micrograph (SEM). — Stock Photo
    Waterlily pollen (Nymphaea mexicana), coloured scanning electron micrograph (SEM).
    Quartz crystals structure — Stock Photo
    Quartz crystals structure
    Coloured frontal X-ray of an artificial knee joint (white). — Stock Photo
    Coloured frontal X-ray of an artificial knee joint (white).
    Coloured scanning electron micrograph (SEM) of a fractured bile duct. — Stock Photo
    Coloured scanning electron micrograph (SEM) of a fractured bile duct.
    Kidney glomerulus and podocyte cells — Stock Photo
    Kidney glomerulus and podocyte cells
    Kidney glomerulus and podocyte cells — Stock Photo
    Kidney glomerulus and podocyte cells
    Leech, coloured scanning electron micrograph (SEM). — Stock Photo
    Leech, coloured scanning electron micrograph (SEM).
    Lung tissue, coloured transmission electron micrograph (TEM). — Stock Photo
    Lung tissue, coloured transmission electron micrograph (TEM).
    Cotton bud with ear wax embedded in fibres, coloured scanning electron micrograph (SEM). — Stock Photo
    Cotton bud with ear wax embedded in fibres, coloured scanning electron micrograph (SEM).
    Flowering currant pollen grains — Stock Photo
    Flowering currant pollen grains
    Coloured scanning electron micrograph (SEM) of a tardigrade (Macrobiotus sp.), or water bear. — Stock Photo
    Coloured scanning electron micrograph (SEM) of a tardigrade (Macrobiotus sp.), or water bear.
    Blood vessel in the lung — Stock Photo
    Blood vessel in the lung
    Kidney glomerulus and podocyte cells — Stock Photo
    Kidney glomerulus and podocyte cells
    Hypodermic needle (26 gauge) and human blood, coloured scanning electron micrograph (SEM). — Stock Photo
    Hypodermic needle (26 gauge) and human blood, coloured scanning electron micrograph (SEM).
    Human hair, coloured scanning electron micrograph (SEM). — Stock Photo
    Human hair, coloured scanning electron micrograph (SEM).
    Seminiferous tubules and lending cells — Stock Photo
    Seminiferous tubules and lending cells
    Scanning electron micrograph (SEM) of a PC12 neurone in culture. — Stock Photo
    Scanning electron micrograph (SEM) of a PC12 neurone in culture.
    Blood vessel in the lung — Stock Photo
    Blood vessel in the lung
    Water flea (Polyphemus pediculus), coloured scanning electron micrograph (SEM). — Stock Photo
    Water flea (Polyphemus pediculus), coloured scanning electron micrograph (SEM).
    X-ray showing a fractured tibia — Stock Photo
    X-ray showing a fractured tibia
    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.
    Kidney glomerulus and podocyte cells — Stock Photo
    Kidney glomerulus and podocyte cells
    Blood vessel in the lung — Stock Photo
    Blood vessel in the lung
    X-ray showing a fractured tibia — Stock Photo
    X-ray showing a fractured tibia
    Surface of a fallopian tube — Stock Photo
    Surface of a fallopian tube
    Epithelium from a fallopian tube — Stock Photo
    Epithelium from a fallopian tube
    Mucosa of the trachea — Stock Photo
    Mucosa of the trachea
    Surface of a fallopian tube — Stock Photo
    Surface of a fallopian tube
    Blade of grass with a serrated edge — Stock Photo
    Blade of grass with a serrated edge
    Helicobacter pylori bacterium — Stock Photo
    Helicobacter pylori bacterium
    Blade of grass with a serrated edge — Stock Photo
    Blade of grass with a serrated edge
    Candida albicans infected medical catheter — Stock Photo
    Candida albicans infected medical catheter
    Pollen grains of a common daisy — Stock Photo
    Pollen grains of a common daisy
    Pollen grains of a common daisy — Stock Photo
    Pollen grains of a common daisy
    Patient with a heart pacemaker — Stock Photo
    Patient with a heart pacemaker
    Geranium pollen grain — Stock Photo
    Geranium pollen grain
    Paramecium ciliate protozoan — Stock Photo
    Paramecium ciliate protozoan
    Earthworm coloured scanning electron micrograph — Stock Photo
    Earthworm coloured scanning electron micrograph
    Clematis montana pollen — Stock Photo
    Clematis montana pollen
    Mycobacterium chelonae bacteria — Stock Photo
    Mycobacterium chelonae bacteria
    Female copepod with eggs — Stock Photo
    Female copepod with eggs
    Candida albicans infected medical catheter — Stock Photo
    Candida albicans infected medical catheter
    Angel trumpets pollen — Stock Photo
    Angel trumpets pollen
    Mixed oral bacteria — Stock Photo
    Mixed oral bacteria
    Horse chestnut pollen grain — Stock Photo
    Horse chestnut pollen grain
    Geranium sp. pollen grain — Stock Photo
    Geranium sp. pollen grain
    Dental plaque scanning electron micrograph — Stock Photo
    Dental plaque scanning electron micrograph
    Skull with an extradural haematoma — Stock Photo
    Skull with an extradural haematoma
    Patient with a heart pacemaker — Stock Photo
    Patient with a heart pacemaker
    Female copepod with eggs — Stock Photo
    Female copepod with eggs
    Stagnant water bacteria — Stock Photo
    Stagnant water bacteria
    Dog tapeworm head — Stock Photo
    Dog tapeworm head
    Dental floss with cheek cells — Stock Photo
    Dental floss with cheek cells
    Bacteria found in a sample of human faeces — Stock Photo
    Bacteria found in a sample of human faeces
    Varicella zoster virus particle — Stock Photo
    Varicella zoster virus particle
    Bacteria forming Dental plaque — Stock Photo
    Bacteria forming Dental plaque
    Bottlebrush pollen grain — Stock Photo
    Bottlebrush pollen grain
    Paramecium ciliate protozoan — Stock Photo
    Paramecium ciliate protozoan
    Streptomyces coelicoflavus bacteria — Stock Photo
    Streptomyces coelicoflavus bacteria
    Bottlebrush pollen grain — Stock Photo
    Bottlebrush pollen grain