UASt regulatory sequences drive expression of a mutant form of HAdV-C\E4orf4 that is unable to bind tws.
visible | adult stage, with Scer\GAL4en.PU
anterior crossvein, with Scer\GAL4en.PU
26% of flies expressing Zzzz\E4orf4R73-74-75A.Scer\UAS under the control of Scer\GAL4en.PU exhibit loss of the anterior cross vein.