Contents

04 August 2006
Vol 313, Issue 5787

About The Cover

Cover image expansion

COVER The fungus Neurospora crassa expressing spores in a circadian rhythm, distorted into a circle with four parts representing the four stages of the cell cycle. Unanticipated interregulation links the circadian cycle with cell division through modulation of a cell cycle checkpoint kinase, as described on page 644. Illustration: L. Larrondo