I work with the T47D-KBluc cell line (human breast cancer, ATCC No: CRL-2865), and want to perform the Promega Luciferase Assay System. Therefore I need to lyse the cells with 20µl/well CCLR (1x), but the protocol doesn't provide details on the time required for sufficent cell lysis. Has somebody made experiences with CCLR or recommendations?