
Fig. 2. ss is regulated by Dll and hth. (A) Wild type antenna disc showing Hth protein (green) and Dll protein (red). (B) ss null antenna disc of genotype Df(3R)ssD114.4/ssD114.9 in which Hth and Dll expression is normal. (C) Wild-type expression of ss in a late third instar leg disc. (D) Expression of ss is induced in the distal leg (arrow) by ectopic expression of Hth. (E) Wild-type expression of ss in a late third instar wing disc. (F) Expression of ss is induced in the wing pouch (arrows) by ectopic expression of Hth.