To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Movie S2 Vkg-GFP signal in a cultured pupal haltere disc. It shows the eversion of the disc and retraction of the peripodial membrane. See that, contrary to what happens in the wing disc, Vkg-GFP expression persists after these events. The Drosophila Hox gene Ultrabithorax controls appendage shape by regulating extracellular matrix dynamics José M. De las Heras, Celia García-Cortés, David Foronda, José Carlos Pastor-Pareja, L. S. Shashidhara, and Ernesto Sánchez-Herrero Development 2018. 145:None-None; doi: 10.1242/dev.161844 Download Original Video