Downregualtion of RECQ1 triggers spontaneous RAD51 foci accumulation. A) Western blot analysis of T98G cell lines transiently transfected with a RECQ1-specific siRNA duplex. L indicates the Luciferase siRNA control, R the siRNA against RECQ1. B) The pictures show the immunostaining of endogenous RECQ1 and RAD51 on T98G cells after treatment with anti-RECQ1 siRNA or control siRNAs. C) The graph shows the percentage of cells that contain a defined number of RAD51 foci per cell.