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Figure 4


Fig. 4. Sens alone can both repress R7 and activate R8 features. Adult cryosections from control and sens GOF Drosophila. (A) IP-GAL4; UAS-lacZ; (B,D) yw67; UAS-sens/CyO; TM2/TM6B; (C,I) IP-GAL4; Sp/CyO; TM2/TM6B; (E-G,J-L) IP-GAL4; UAS-sens (H) IP-GAL4; UAS-sens/CyO; TM2/TM6B. All retinas oriented dorsal left, distal up; R7 and R8 layers are bracketed. Sections were stained for ß-gal (purple, A), Rh3 (purple, B,C,F,G), Rh4 (green, B,F), Rh5 (green, C,G; purple, D,H), Rh6 (green, D,H; purple, L), Sens (green, E,I-L) and Pros (purple, I-K). Note that many sens-misexpressing R7 cells exhibit an R8-like proximal nucleus (E,J-L). (M) Summary of control or sens GOF phenotypes. `R7' represents sens-misexpressing R7 cells in sens GOF eyes.





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