To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Movie 2 (related to Fig. 3). Shell-projection (with background subtraction and gaussian blur) of á-catenin RNAi embryo expressing sqh::GFP (myosin) and gap43::mCherry (membranes) trying to initiate ventral furrow formation. Scale bar = 10 μm. Combinatorial patterns of graded RhoA activation and uniform F-actin depletion promote tissue curvature Marlis Denk-Lobnig, Jan F. Totz, Natalie C. Heer, Jörn Dunkel, and Adam C. Martin Development 2021. 148:None-None; doi: 10.1242/dev.199232 Download Original Video