title: Cracking the combinatorial semaphorin code.
abstract: In this issue of Neuron, Wu et al. describe a combinatorial code of repulsive Sema-2a and attractive Sema-2b signaling that mediates mechanosensory axonal guidance, fasciculation, and synaptic target selection within the CNS of Drosophila. Their work exemplifies how a detailed, multilevel molecular-genetic analysis (from molecules to behavior) provides fundamental insights into neural circuit development.
authors.affiliation: Molecular, Cellular, and Developmental Biology Department, Yale University, POB 208103, New Haven, CT 06520-8103, USA.
authors.forename: Brett
authors.initials: B
authors.lastname: Berke
authors.forename: Haig
authors.initials: H
authors.lastname: Keshishian