Department of Zoology, University of Wisconsin-Madison, 1117 West Johnson Street, Madison, WI 53706, USA. jdhardin@wisc.edu
In this issue of Developmental Cell, Rasmussen et al. (2008) investigate the morphogenesis of the Caenorhabditis elegans pharynx. Their results highlight the usefulness of this system for investigating the molecular mechanisms behind the unusual cell behaviors that underlie the formation of single-celled tubes during animal development.