IMAGES: The Illustrated Worm

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Science  03 Jan 2003:
Vol. 299, Issue 5603, pp. 25
DOI: 10.1126/science.299.5603.25e

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The nematode Caenorhabditis elegans has no eyes or heart and only 959 cells. Its simplicity has allowed scientists to work out its anatomy in greater detail than for any other animal. Explore the architecture of normal worms at the Web site Wormatlas, created by nematode mavens at Yeshiva and Columbia universities. The site's still-growing anatomical handbook features elegant art and will eventually cover all the worm's organ systems. For a closer look inside the animal, fire up the Wormviewer, which summons crosssections from different parts of the worm's body, or scrutinize a particular slice with the Wormtiler. An illustrated section describes the origin, location, and function of the worm's neurons. There's also a guide to identifying cell types, as well as how-to's on lab techniques such as staining internal structures and preparing worms for viewing under the electron microscope.

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