Fig. 7. DAB-1::GFP is associated with puncta at the apical membrane of epithelial cells. (A) DAB-1::GFP puncta are associated with the apical membrane of the syncitial epidermal cell. Double-headed arrow indicates a region largely devoid of puncta; this region has a thinner cross-section compared with the regions with high densities of DAB-1::GFP puncta. The lateral epidermis, which is also devoid of DAB-1::GFP puncta, is indicated by a bracket symbol. (B) The intestinal cells show puncta associated with their basolateral surfaces. (C) The apical surface (arrowhead) of the pharynx displays prominent DAB-1::GFP puncta, which are absent from the basolateral surface (arrow). (D) The excretory pore cell, showing enrichment of DAB-1::GFP and associated puncta along its apical surface (which forms part of the lumen of the excretory duct) (arrow). Images are oriented with anterior to the left (A-D). Bar, 10 µm.