dorsal appendage forming follicle cell roof cell 2017-02-09T10:45:33Z roof-forming cell A dorsal appendage forming follicle cell that forms the roof of the cellular tube encircling the developing dorsal appendages. These cells are initially located in two bilaterally symmetric domains in the dorso-anterior of the oocyte associated follicular epithelium, located immediately posterior and lateral of the floor cells. The roof cells that are adjacent to the floor cells lead the anterior migration of the whole population of roof cells and are responsible for tube elongation during dorsal appendage development. fly_anatomy.ontology FBbt:00046038