title: Pattern formation. Hedgehog points the way.
abstract: Recent findings indicate that the Drosophila gene hedgehog and its vertebrate homologues act in analogous ways as signalling molecules that help provide cells with positional information during development.
authors.affiliation: Molecular Embryology Laboratory, ICRF Developmental Biology Unit, Oxford, UK.
authors.forename: P W
authors.initials: PW
authors.lastname: Ingham
mesh_terms: D000818:Animals; D016764:Cell Polarity / Q000235:genetics; D004330:Drosophila / Q000196:embryology* / Q000235:genetics; D017344:Genes, Insect; D009154:Mutation; D015398:Signal Transduction / Q000235:genetics