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    Eyelash follicle, coloured scanning electron micrograph (SEM). — Stock Photo
    Eyelash follicle, coloured scanning electron micrograph (SEM).
    Leech, coloured scanning electron micrograph (SEM). — Stock Photo
    Leech, coloured scanning electron micrograph (SEM).
    Leech, coloured scanning electron micrograph (SEM). — Stock Photo
    Leech, coloured scanning electron micrograph (SEM).
    Eyelash follicle, coloured scanning electron micrograph (SEM). — Stock Photo
    Eyelash follicle, coloured scanning electron micrograph (SEM).
    Leech, coloured scanning electron micrograph (SEM). — Stock Photo
    Leech, coloured scanning electron micrograph (SEM).
    Caterpillar hairs. Coloured scanning electron micrograph (SEM) of hairs from the vapourer moth (Orgyia antiqua) caterpillar. — Stock Photo
    Caterpillar hairs. Coloured scanning electron micrograph (SEM) of hairs from the vapourer moth (Orgyia antiqua) caterpillar.
    Pyoderma skin disease — Stock Photo
    Pyoderma skin disease
    Leech, coloured scanning electron micrograph (SEM). — Stock Photo
    Leech, coloured scanning electron micrograph (SEM).
    House dust mites — Stock Photo
    House dust mites
    Bacillus megaterium bacterial colony, coloured scanning electron micrograph. — Stock Photo
    Bacillus megaterium bacterial colony, coloured scanning electron micrograph.
    Sperm in a fallopian tube. Coloured composition scanning electron micrograph (SEM) of human sperm travelling through a fallopian tube (oviduct) of a female — Stock Photo
    Sperm in a fallopian tube. Coloured composition scanning electron micrograph (SEM) of human sperm travelling through a fallopian tube (oviduct) of a female
    Abutilon pollen grain — Stock Photo
    Abutilon pollen grain
    Silhouette with lungs pneumonia caused by measles virus, conceptual illustration. — Stock Photo
    Silhouette with lungs pneumonia caused by measles virus, conceptual illustration.
    Resting T lymphocytes. Coloured scanning electron micrograph (SEM) of resting T lymphocytes from a human blood sample. T lymphocytes, or T cells, are a type of white blood cell and components of the body's immune system — Stock Photo
    Resting T lymphocytes. Coloured scanning electron micrograph (SEM) of resting T lymphocytes from a human blood sample. T lymphocytes, or T cells, are a type of white blood cell and components of the body's immune system
    Escherichia coli on the surface of human skin — Stock Photo
    Escherichia coli on the surface of human skin
    Lymphoma cancer cell — Stock Photo
    Lymphoma cancer cell
    Zika virus particles — Stock Photo
    Zika virus particles
    Coloured coronary angiogram (X-ray) of a 59 year old patient with severe stenosis (narrowing) in the left anterior interventricular coronary artery (running down left) and the left circumflex artery (centre). — Stock Photo
    Coloured coronary angiogram (X-ray) of a 59 year old patient with severe stenosis (narrowing) in the left anterior interventricular coronary artery (running down left) and the left circumflex artery (centre).
    Coloured scanning electron micrograph of tardigrade water bear. — Stock Photo
    Coloured scanning electron micrograph of tardigrade water bear.
    Human red blood cells — Stock Photo
    Human red blood cells
    Colored scanning electron micrograph of anthrax gram-positive, rod-shaped bacteria known as Bacillus anthracis. — Stock Photo
    Colored scanning electron micrograph of anthrax gram-positive, rod-shaped bacteria known as Bacillus anthracis.
    Abstract coloured scanning electron micrograph of crystalline surface of fractured gallstone. — Stock Photo
    Abstract coloured scanning electron micrograph of crystalline surface of fractured gallstone.
    Hair shafts growing from human skin — Stock Photo
    Hair shafts growing from human skin
    Clostridium phytofermentans bacteria — Stock Photo
    Clostridium phytofermentans bacteria
    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
    Deformed sperm cell — Stock Photo
    Deformed sperm cell
    Soil bacteria, coloured scanning electron micrograph. — Stock Photo
    Soil bacteria, coloured scanning electron micrograph.
    T lymphocyte cells attached to cancer cell — Stock Photo
    T lymphocyte cells attached to cancer cell
    Escherichia coli on the surface of human skin — Stock Photo
    Escherichia coli on the surface of human skin
    Colored scanning electron micrograph of diatoms photosynthetic single-celled algae. — Stock Photo
    Colored scanning electron micrograph of diatoms photosynthetic single-celled algae.
    Milkwort pollen grain — Stock Photo
    Milkwort pollen grain
    Briefcase with various items, X-ray. — Stock Photo
    Briefcase with various items, X-ray.
    Colored scanning electron micrograph of osteoblast osteocyte bone cell. — Stock Photo
    Colored scanning electron micrograph of osteoblast osteocyte bone cell.
    Silhouette with lungs pneumonia caused by measles virus, conceptual illustration. — Stock Photo
    Silhouette with lungs pneumonia caused by measles virus, conceptual illustration.
    Pollen grains of a common daisy — Stock Photo
    Pollen grains of a common daisy
    Streptomyces coelicoflavus bacteria — Stock Photo
    Streptomyces coelicoflavus bacteria
    Colored computed tomography scan of section through brain of senior male patient with dementia. — Stock Photo
    Colored computed tomography scan of section through brain of senior male patient with dementia.
    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
    Patient with a heart pacemaker — Stock Photo
    Patient with a heart pacemaker
    Breast cancer screening — Stock Photo
    Breast cancer screening
    Passion flower pollen — Stock Photo
    Passion flower pollen
    Fly head anatomy — Stock Photo
    Fly head anatomy
    House dust mites — Stock Photo
    House dust mites
    Fungal cells showing sporangium — Stock Photo
    Fungal cells showing sporangium
    Normal human brain — Stock Photo
    Normal human brain
    Candida albicans infected medical catheter — Stock Photo
    Candida albicans infected medical catheter
    Coloured scanning electron micrograph of cancer cells migrating down pores. — Stock Photo
    Coloured scanning electron micrograph of cancer cells migrating down pores.
    Blade of grass with a serrated edge — Stock Photo
    Blade of grass with a serrated edge
    Coloured chest X-ray showing aspiration (dark areas) in the lungs of a 76-year-old female patient with an extensive brain haemorrhage. — Stock Photo
    Coloured chest X-ray showing aspiration (dark areas) in the lungs of a 76-year-old female patient with an extensive brain haemorrhage.
    Human hair Caucasian brunette, coloured scanning electron micrograph. — Stock Photo
    Human hair Caucasian brunette, coloured scanning electron micrograph.
    Coloured scanning electron micrograph of bacteria on surface of human tongue. — Stock Photo
    Coloured scanning electron micrograph of bacteria on surface of human tongue.
    Kidney glomerulus and podocyte cells — Stock Photo
    Kidney glomerulus and podocyte cells
    Asparagus beetle head — Stock Photo
    Asparagus beetle head
    Colored scanning electron micrograph image of tooth dentine, mineralised connective tissue found under tooth enamel. — Stock Photo
    Colored scanning electron micrograph image of tooth dentine, mineralised connective tissue found under tooth enamel.
    X-ray of large shoulder lipoma — Stock Photo
    X-ray of large shoulder lipoma
    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.
    Hair shafts growing from human skin — Stock Photo
    Hair shafts growing from human skin
    Photosynthetic Navicula sp. diatom — Stock Photo
    Photosynthetic Navicula sp. diatom
    Fungal cells showing sporangium — Stock Photo
    Fungal cells showing sporangium
    Human red blood cells — Stock Photo
    Human red blood cells