Fig. 6. Constitutive wg signaling blocks normal differentiation pathways of follicle cells. The micrograph in A represents a confocal section along the surface of an ovariole, whereas the rest are one confocal cross section of an egg chamber or an ovariole. (A,B) Parts of two ovarioles labeled for lacZ (red) and pH3 (green) showing marked mutant Axn follicle cell clones (outlined). (C,D) Parts of two ovarioles labeled for lacZ (red) and Lamin C (green), showing marked mutant Axn follicle cell clones (outlined) and normal (C, arrowhead) or mutant (D, arrowhead) Axn stalk cells. (E-J) Parts of ovarioles labeled for lacZ (red) and Fas3 (green) showing (E,G,I) marked mutant Axn (outlined) or (F,H,J) sgg follicle cell clones (outlined). The mutant Axn follicle cells between egg chambers express high levels of Fas3, but those that are integrated into egg follicle epithelium fail to express Fas3 at high levels. Arrows in I and J indicate wild-type polar cells. Scale bars: 10 µm.