ARÉCHAGA MARTÍNEZ, JUAN (DIR.)
This current issue of The International Journal of Developmental Biology focuses attention on many models that represent the metazoan super-clade called the Spiralia (Lophotrochozoa). This clade encompasses the largest number of metazoan phyla, with arguably the most diverse array of animal body plans.
Jonathan Henry, Department of Cell & Developmental Biology, University of Illinois, Urbana, IL, USA