... 0.65 µm radius of the TCJ centre point, allowing us to remove these and define a ‘no-vertex’ BCJ density (see ‘Top-down view’ in Fig. S4E ). For Myosin-II channels, the fluorescence density of each cell–cell interface in each movie frame was calculated as the average intensity of ‘no-vertex’ BCJ...

.... The subcellular localization of Myosin-II (Myo-II) dictates these different morphogenetic processes. In the intercalating ectoderm Myo-II is mostly cortical, but in the mesoderm Myo-II is concentrated in a medial meshwork. We report that apical constriction is repressed by JAK/STAT signalling in the lateral...