We thank the reviewer for this discussion. The empty vector control clone was transduced and selected afterwards. During the selection procedure it is possible that a subclone was generated that expresses slightly more (or less) of any mRNA and protein. It differs from the wildtype by handling (transduction, selection etc) and somewhat by age (cell divisions). Therefore, for all comparisons the empty vector clone was used, as this clone was generated in parallel to the MACC1 clone.
should be after "Expression was correlated with survival and morphological characteristics."