Insertion of a 0.8kb ApaI-XbaI fragment of the iab-7PRE, which includes hypersensitive site HS3, upstream of Ecol\lacZUbx.BXD.
860bp iab-7PRE fragment.
Construct: 0.8kb ApaI-XbaI fragment of the iab-7PRE, containing hypersensitive site HS3.