Contents

28 February 2012
Vol 5, Issue 213

About The Cover

Cover image expansion

Online Cover This week features a Focus Issue on cell migration and chemotaxis. Content in this issue highlights how model organisms, modeling, cell biology, and biochemistry have uncovered the signaling molecules, networks, and regulatory mechanisms that control directional cell movement. The image shows Dictyostelium cells streaming toward a pipette containing the chemoattractant cAMP. [Image: Chun-Lin Chen, Department of Cell Biology, Johns Hopkins University School of Medicine, Baltimore, MD]