The RMCE cassette of the Mi{MIC}Pi3K68DMI15179 insertion has been replaced with a Trojan-GAL4 cassette. The insertion is in a coding intron of both the Pi3K68D and CG14131 genes. The genes are transcribed from opposite strands and the Trojan exon cassette is oriented such that the expression pattern of GAL4 should reflect that of Pi3K68D.