STEVE GSCHMEISSNER / SCIENCE PHOTO LIBRARY STEVE GSCHMEISSNER / SCIENCE PHOTO LIBRARY
Human cervix. Light micrograph of a section through the epithelium of a biopsy taken from a healthy human cervix. The cervix is the narrow passage that connects the vagina and the uterus. The epithelial cells show a typically stratified (layered) form. Cell division is confined to a single layer of basal cuboidal cells. As the cells mature they are pushed upwards and their nuclei (dark dots) thicken and eventually break down. The cell cytoplasm becomes progressively flattened until the cells are shed from the surface. Magnification: x100 when printed at 10 centimetres wide.
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