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Fig. 8. The so mutant phenotype in the ovary. (A) Nomarski optics images
of a wild-type ovariole stained for ß-galactosidase activity to reveal
the expression pattern of so5-lacZ in stalk cells (arrows)
after stage 3. (B-D) Fluorescence images of two so mutant egg
chambers (e1 and e2). (B) In the e1 egg chamber most follicle cells are mutant
for so (lack GFP). In the e2 egg chamber, about half of the follicle
cells are mutant for so and lack GFP (e2). (C) DAPI staining of the
same two egg chambers. (D) Polar cells (arrows), revealed by anti FAS3
staining, develop normally. Scale bar: 50 µm.