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    Light micrograph of a longitudinal section through filiform papillae on the tongue surface. — Stock Photo
    Light micrograph of a longitudinal section through filiform papillae on the tongue surface.
    Digital artwork of green cancer cell on tissue surface. — Stock Photo
    Digital artwork of green cancer cell on tissue surface.
    HIV viruses infecting T-lymphocyte cell — Stock Photo
    HIV viruses infecting T-lymphocyte cell
    3d illustration of several falling hairs that have detached from skin. — Stock Photo
    3d illustration of several falling hairs that have detached from skin.
    Dividing bacteria on tissue surface — Stock Photo
    Dividing bacteria on tissue surface
    Coloured scanning electron micrograph of surface of prostate cancer cells. — Stock Photo
    Coloured scanning electron micrograph of surface of prostate cancer cells.
    Digital artwork of green cancer cell on tissue surface. — Stock Photo
    Digital artwork of green cancer cell on tissue surface.
    Large thunderstorm storm cell — Stock Photo
    Large thunderstorm storm cell
    Coloured scanning electron micrograph (SEM) of squamous epithelial cells on the skin surface. — Stock Photo
    Coloured scanning electron micrograph (SEM) of squamous epithelial cells on the skin surface.
    HIV viruses infecting T-lymphocytes — Stock Photo
    HIV viruses infecting T-lymphocytes
    Coloured scanning electron micrograph (SEM) view of the top surface of the organ of Corti in the cochlea of the inner ear. — Stock Photo
    Coloured scanning electron micrograph (SEM) view of the top surface of the organ of Corti in the cochlea of the inner ear.
    Destruction of cancer cell — Stock Photo
    Destruction of cancer cell
    Coloured scanning electron micrograph of surface of prostate cancer cells. — Stock Photo
    Coloured scanning electron micrograph of surface of prostate cancer cells.