Figure 4. eya*GR constructs rescue larval eye imaginal disc development.

Immunohistochemical detection of Eya (A–C) and the pan-neural marker Elav (D–F) in Df/+ (A,D), eya^cli/Df; eya⁺GR/+ (B,E) and eya^cli/Df; eya^NQGR/+ (C,F) third instar larval eye imaginal discs. Expression patterns and levels of Eya and Elav are indistinguishable among eya null eye discs carrying one copy of eya⁺GR, eya^NQGR and Df heterozygotes.