Fig. 3. The salivary glands at stage 15 are stretched in Tec29 mutant embryos. (A-D) SCRIBBLE and FKH staining in the salivary glands show that the cells are isodiametric in w¹¹¹⁸ but are stretched along the axis of the glands in Tec29^K00206 embryos (arrowheads). (E,F) Staining with CRUMBS and FKH also shows that the proximal cells of the salivary glands are stretched in Tec29 embryos (arrows). Because the salivary gland cells are wedge shaped with their apical surface facing the lumen, CRUMBS, being more apical, produces a smaller outline of the cells than does SCRIBBLE.