Fig. 4. Compound and stalkless follicles in fng¹³ clones. fng¹³ (A,C-F) and wild-type control (B) clones marked with arm-lacZ (A) or -Myc (B-F). Left panels show nuclei (white), while right panels show clone markers (green). In the right-hand column, figures show separate images of the same follicle. Arrows indicate polar cells, arrowheads point to the absence of interfollicular stalks. In E’, Fas III staining is also shown (red). (A) fng¹³ clones in the germline, asterisks mark mutant cysts. (B) In wild type, a follicle with an entirely -Myc^- epithelium can form. (C-F) fng¹³ clones in the soma. (C,D) Compound follicles with fng⁺ cells at both extremities. In D, only the polar cells are fng⁺ at the anterior. (E) Stalkless follicles separated by a fused bilayered epithelium. Two posterior polar cells (inset) are present in the epithelium of the younger follicle. (F) Stalkless follicles separated by a monolayer epithelium. The epithelium of the younger follicle is discontinuous (bracket).

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