Co-expression of Hsap\TGFAScer\UAS.T:Ivir\HA1 and Egfr::Hsap\EGFRhE-E.Scer\UAS.T:Avic\GFP under the control of Scer\GAL4slbo.2.6 results in strong defects in border cell migration, with no migration being seen in over 70% of stage 10 egg chambers.
The effect on border cell cluster migration when all border cells co-express PvrDN.Scer\UAS and EgfrDN.Scer\UAS under the control of Scer\GAL4slbo.2.6 and a single border cell expresses Egfr::Hsap\EGFRhE-E.Scer\UAS.T:Avic\GFP have been studied. In those border cell clusters where the single Egfr::Hsap\EGFRhE-E.Scer\UAS.T:Avic\GFP-expressing cell is located at the front of the cluster, the cluster on average moves forward, when the Egfr::Hsap\EGFRhE-E.Scer\UAS.T:Avic\GFP-expressing cell is in the back, the cluster on average moves relatively more backwards.