50.4 MB (3.4 MB compressed)
5144 x 3423 pixels
43.4 x 29.0 cm ⏐ 17.1 x 11.4 in (300dpi)
INNERSPACE IMAGING / SCIENCE PHOTO LIBRARY INNERSPACE IMAGING / SCIENCE PHOTO LIBRARY
Intestinal villi. Light micrograph of the surfaces of two adjacent villi on the lining of the small intestine. Each fold of the wall of the small intestine is covered with these small projections, which serve to increase the surface area for the absorption of nutrients from the gut lumen. Villi are mainly composed of columnar epithelial cells (purple) interspersed with goblet cells (pink). The goblet cells secrete mucous, which lines the surface of the membrane. The regularly ordered nuclei (blue/purple) of the columnar cells are easily visible. Magnification: x340 when printed 10cm wide.
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