About the Cover — April 28, 2009, 106 (17)

Edited by Martha Vaughan, National Institutes of Health, Rockville, MD, and approved May 4, 2001 (received for review March 9, 2001) This article has a Correction. Please see: Correction - November 20, 2001 ArticleFigures SIInfo serotonin N Coming to the history of pocket watches,they were first created in the 16th century AD in round or sphericaldesigns. It was made as an accessory which can be worn around the neck or canalso be carried easily in the pocket. It took another ce

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Cover image: Developing fruiting bodies (sporangiophores) of the fungus Phycomyces blakesleeanus. The sporangiophores Present phototropism that is controlled by the zinc-finger proteins MADA and MADB. The 2 proteins interact to form a complex in yeast 2-hybrid assays and also when coexpressed in Escherichia coli, providing evidence that phototropism and other responses to light are mediated by a photoresponsive transcription factor complex. See the article by Catalina Sanz et al. on pages 7095–7100. Image by Executelores Perez de Camino, Luis M. Corrochano, and Javier Avalos (University of Seville, Seville, Spain).

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