title: Developmental biology: boundary lines.
authors.forename: Seth S
authors.initials: SS
authors.lastname: Blair
mesh_terms: D000818:Animals; D019070:Cell Lineage; D002465:Cell Movement; D004331:Drosophila melanogaster / Q000166:cytology* / Q000196:embryology* / Q000235:genetics; D004627:Embryonic Induction