Contents

22 December 2009
Vol 2, Issue 102

About The Cover

Cover image expansion

Online Cover This week's issue features a Perspective on coupling exocytosis to endocytosis through membrane insertion of calcium channels. The image depicts a vesicle containing a calcium channel that fuses with the membrane, thereby enabling a calcium signal to initiate endocytosis. [Image: Yana Greenman, AAAS]