Construct: BamHI and XbaI were used to remove Ecol\lacZ and replace it with Scer\GAL4wB.
Drives mesodermal expression
In embryos at cellular blastoderm, expressed at high levels in the ventralmost 12-14 cells, with sharp boundaries at lateral borders.
report comment: Bam HI and Xba I were used to remove β-gal and replace it with GAL4.
report comment: 2xPE element comparable to that in P{twi-lacZ.2PE}.