Fig. 7. Effects of a rickets mutation on the death of wing epidermal cells in rk¹ cn¹ bw¹; His-GFP/+ flies. In rk¹ mutants, cell death was inhibited at 2 hours (A) or even at 8 hours (B) after eclosion. In rk¹ mutants neck-ligated at eclosion, cell death was induced by injection of 8-Br-cAMP (10^–1 mol/l) (C), but not by injection of hemolymph from wild-type flies at 30 minutes after eclosion (D).