Fig. 10
From: Mechanical impact of epithelial−mesenchymal transition on epithelial morphogenesis in Drosophila
Schemes recapitulating our working model on EMT induced folding. a Schemes of the successive steps of EMT including apical constriction, generation of an apico-basal pulling force (green arrow) leading to apical deformation, and delamination. b Schemes of fold formation driven by the delamination of cells entering EMT. Two cells (yellow) pull transiently on the apical surface of the epithelium, then neighboring cells constrict their apices in this region of the tissue and a fold is formed (depth is color-coded) while cells start to delaminate sporadically, then massively
