title: Does the Bicoid gradient matter?
abstract: The generation and interpretation of positional information are key processes in developmental systems. In this issue, Chen et al. report discoveries made in the Drosophila embryo that give new insights into how positional information can be produced by patterning gradients.
authors.affiliation: Institut of Developmental Biology, Biocenter, University of Cologne, Zülpicher Straße 47b, 50674 Köln, Germany. siegfried.roth@uni-koeln.de
authors.forename: Siegfried
authors.initials: S
authors.lastname: Roth
authors.forename: Jeremy
authors.initials: J
authors.lastname: Lynch