STEVE GSCHMEISSNER / SCIENCE PHOTO LIBRARY STEVE GSCHMEISSNER / SCIENCE PHOTO LIBRARY
Human vagina. Animated light micrograph of a section through the wall of the vagina. The lumen (at top) is lined with a mucosa of stratified squamous epithelial cells (red) and a lamina propria (blue) containing blood vessels and nerves. The thickness of this mucosal layer changes during the menstrual cycle.
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