Fig. 1. F72 homozygous follicle cell clones produce groups of eggshell imprints with a smooth border. In all figures, anterior is towards the left and dorsal is towards the top, unless otherwise indicated. (A) Wild-type egg. (B) Egg from an F72 mosaic female. Groups of surface imprints exhibit smooth borders (arrows). (C) Egg from a female with homozygous F72 clones marked with the dec-1 eggshell marker (arrows). (D) Egg from an ed^lF20 mosaic female.(E,E') Clone of F72 homozygous follicle cells in a stage 11 egg chamber. (E) Clone is marked by the absence of the NM clone marker (basal confocal section); heterozygous and homozygous wild type cells are also visible. (E') Anti-phosphotyrosine (p-Tyr) staining, apical confocal section. The apical clone border is smooth. (F,F') Rhodamine-phalloidin staining to visualize filamentous actin (F-actin). F72 mutant clones at stage 10B (F, basal confocal section) do not exhibit a smooth border (F', apical confocal section).