Fig. 2. Increasing wg signaling by over-expressing wg downstream components can promote follicle cell proliferation. The ovariole from the females over-expressing (A) no genes (control), (B) Fz2, (C) dsh and (D) an activated arm for four days are labeled for Vasa (red) and Hts (green). A shows normal stalk cells (arrows), whereas B-D show extra stalk cells (arrows). A and D represent one confocal section, whereas B and C show images of multiple sections. All the germaria are shown at the same scale. Scale bar in A: 10 µm.