50.2 MB (7.7 MB compressed)
5079 x 3454 pixels
42.9 x 29.2 cm ⏐ 16.9 x 11.5 in (300dpi)
STEVE GSCHMEISSNER / SCIENCE PHOTO LIBRARY STEVE GSCHMEISSNER / SCIENCE PHOTO LIBRARY
Colon lining. Coloured light micrograph of a section through a human colon. The colon is lined with intestinal villi containing crypts of Lieberkuhn, elongated pockets (lower right) that lie in the vascular submucosa (white) . These glands contain two types of cells: goblet cells (pink), which secrete a lubricant into the colon which aids the movement of faeces; and absorptive columnar epithelial cells (purple), which absorb water from the faeces. The number and shape of the glands greatly increases the surface area for absorption. Magnification: x500 when printed 10cm wide.
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