Colony formation ARNTL, RBCK1 and TNIP1 shRNA vectors.

<p>Cells were infected with shRNA vectors targeting ARNTL, RBCK1 and TNIP1 and control shRNA vectors targeting GFP, p53, 53BP1 and p21. Cells were infected at 32°C and shifted to 39°C 2 days after infection. After three weeks culture at 39°C, the cells were fixed and stained.