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. 2021 Mar 25;12:1756. doi: 10.1038/s41467-021-22010-9

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© The Author(s) 2021

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 2 — Schematic representation of the salivary gland (a) and trachea (b) with the region imaged marked by the red and blue ROIs. Images show the top view (red ROI) and cross-section view (blue ROI) of the SG and trachea expressing E-Cad^GFP (magenta). A representative cell is shown with apical area marked in blue and apico-basal area marked in green. Scale bar in top-view images in (a) and (b), 25 µm. Scalebar in cross-section images, 25 µm along both axes. c–e Cell morphology in different regions of the wing disc. PM of the wing disc is colored in dark red (c). The fold is colored in light green (d), and the pouch is colored in orange (e). Images show the top view and cross-section view of each wing disc region expressing E-Cad^GFP (magenta). A representative cell is shown with the apical area marked in blue and apico-basal area marked in green. Scale bar in top-view images, 15 µm. Scale bar in cross-section images, 15 µm along both axes. f Schematic representation of cell deformation index (D_cell) for epithelial tissues. D_cell for a cube is 1, whereas D_cell for a cuboid elongated along the apico-basal axis is <1 and a cuboid compressed along the apico-basal axis is >1. g Box-plot of D_cell for different epithelial tissues of Drosophila. The sample number, n represents the number of cells analyzed across 10 different tissue samples. h Scatter plot between D_cell and normalized levels of LamC. Each point in the scatter plot represents an individual cell in different Drosophila tissues. Solid black line represents the LOESS regression of the data. The Spearman rank correlation coefficient, R_sp is 0.723. P values are estimated by one-way ANOVA and the p values are shown for comparison with the D_cell value in the pouch.