FBXW7 and neoplasm: This was despite the fact that the expected sized bands could be observed in lanes 6 and 8 displaying the input sample, not immunoprecipitated with anti-AGO antibody, from HEK-MMTV cells and the positive control for PCR (CTRL(+)) representing a cDNA sample prepared from an MMTV-induced tumour cell line expressing high levels of the virus, respectively.