Epithelial cell size and shape is affected by decreased proliferation. Cell outlines are marked with Basigin::YFP. Scale bars =­ 5 μm. Cells become more aligned with the tissue elongation axis when proliferation is stopped using String-shRNA (C). Number of cells analyzed: w1118 1.0-1.2 n= 14, 1.2-1.4 n=114, 1.4-1.6 n=160; String-shRNA 1.0-1.2, n=10, 1.2-1.4 n=19, 1.4-1.6 n=17. Statistical significance calculated using a Mann-Whitney test. Data information: Bars represent mean and standard deviation. 