In 44% of Socs36E178 aptKG05830/Socs36EEY06665 apt167 stage 10 egg chambers the border cells are tethered to the anterior end of the egg chamber by non-cluster associated invasive cells. This inability to detach from neighbouring follicle cells results in a migration delay in 31% of the stage 10 double mutant egg chambers.
One copy of Stat92E06346 partially suppresses the invasive border cell phenotype seen in aptKG05830/apt167 mutant stage 10 egg chambers. A reduction is seen in both the frequency of affected egg chambers and the number of cells. On average 26% of egg chambers contain "stretched border cells" compared to ~80% in aptKG05830/apt167 alone. The border cell cluster also detaches much more easily from the anterior end of the egg chamber.