Section of tll promoter includes D3 subsegments P, Q and R.
Oligomerized fragment of tll promoter, from -255bp to -134bp, including D3.2 subsection of D3 region, fused to lacZ reporter.
Very weak EcollacZ reporter geneexpression is observed at the posterior pole in early embryos.
In assay for pattern of expression in embryos, G5 is expressed at very low levels (detectable only by in situ hybridization) at the posterior pole.