(C) Immunofluorescence analysis of MERVL-gag protein in Foxd3 cKO cells, Foxd3 cKO cells over expressing full length FOXD3 or FOXD3 M1 without and with 4-OHT. Nuclei are labelled with DAPI. The percentage of counted cells (~150 cells per experiment) exhibiting immunofluorescence signal is indicated. Scale bar represents 10μm n= 3 biological replicates. 