Expression of the spi extracellular domain (residues 1-139) fused to the Krn intracellular and transmembrane domains (residues 124-217), is under the control of UAS sequences.
wing, with Scer\GAL4Bx-MS1096
Krn::spiSpiEC-KrnIC.Scer\UAS; Scer\GAL4Bx-MS1096 flies have small bloated wings, similar to those seen in KrnScer\UAS.cRa; Scer\GAL4Bx-MS1096 flies.