Figure 1. Construction of the (Lenti)-LEP503-HSV-tk-EGFP vector. A: The assumption diagram for the (Lenti)-CMV-HSV-tk-EGFP vector. B: The assumption diagram for the (Lenti)-LEP503-HSV-tk-EGFP vector. C, D: Confirmation of the (Lenti)-LEP503-HSV-tk-EGFP vector with a PCR assay (C) and an enzyme cut assay (D).