Article Information
vol. 307 no. 5715 1642-1645
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History:
- Received for publication September 17, 2004
- Accepted for publication January 12, 2005
- .
Copyright & Usage:
American Association for the Advancement of Science
Author Information
- Department of Anatomy, University of Cambridge, Downing Street, Cambridge CB2 3DY, UK, and Institute of Physiology, University of Fribourg, CH-1700 Fribourg, Switzerland.
- ↵‡ To whom correspondence should be addressed. E-mail: ws234{at}cam.ac.uk
↵* Present address: Department of Biology, Stanford University, Stanford, CA 94305–5125, USA.
