Construct: Fragment containing three Su(Ste) repeats (the Su(Ste) repeats each also contain a 1360 element insertion).
Construct: 127bp Sau3A fragment carrying the Adh start codon and 30 amino acids drives Ecol\lacZ expression.
At gastrulation, a weak stripe of expression observed in the head region; believed to due to sequences associated with EcollacZC4.Adh, carried on the P{CaSpeR-AUG-βgal} construct.