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Fig. 5. E2f1 destruction is replication-dependent. (A-E) Stage 11 embryos
were pulse-labeled with BrdU for 5 minutes, and stained for E2f1 (green), BrdU
incorporation (red) and phospho-tyrosine (cyan). (A)
stg7B/stg7B. (B)
dupa1/dupa1. (C)
dupa3/dupa3. (D)
dap4454/dap4454; arrow indicates epithelial
cells expressing low levels of E2f1. (E) UAS dap/arm-Gal4
VP16. (F) Stage 11 Df(1)biD3/Df(1)biD3 fzr-mutant embryos were
pulse-labeled with BrdU for 15 minutes, and stained for E2f1 (green) and BrdU
incorporation (red); arrow indicates epithelial cells expressing low levels of
E2f1 similar to dap mutants. Scale bars: 50 µm.