title: Positional signalling: where are we now?
authors.forename: J
authors.initials: J
authors.lastname: Smith
mesh_terms: D000818:Animals; D002454:Cell Differentiation; D004330:Drosophila / Q000196:embryology; D029721:Drosophila Proteins; D004627:Embryonic Induction; D005786:Gene Expression Regulation; D018398:Homeodomain Proteins; D007301:Insect Hormones / Q000235:genetics; D015398:Signal Transduction; D015534:Trans-Activators
chemical_list: D029721:Drosophila Proteins; D018398:Homeodomain Proteins; D007301:Insect Hormones; D015534:Trans-Activators; C056478:bcd protein, Drosophila