ISM / SCIENCE PHOTO LIBRARY ISM / SCIENCE PHOTO LIBRARY
Light micrograph of a section through the wall of the large intestine (colon), showing smooth muscle fibres (pink). Between them, in the collagen (red), are purple cells, the Auerbach's plexus (or myenteric plexus); the cells more clearly violet with a round nucleus and nucleolus are the ganglion nerve cells (neurons). At top right is Meissner's plexus. HES stain. Magnification: x275 when printed at 10 centimetres wide.
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