https://www.mgmtinhibitor.com/2016/10/11/the-ad5luc1-pk-vector-was-rescued-following-transfection-of-hek-293-cells-and-massive-scale-preparations-of-ad5luc1-pk-and-the-ad5luc1-manage-vector-have-been-developed-and-purified-by-double-cscl-gra/