
Functional selection of ZFNs using the Surveyor assay in HEK293T cells. ZFN CS2-1-L5 + R3, as a positive control, and all 16 combinations of ZFN T2-X6 were assayed in duplicate. The number of fingers in the left and right arrays for each ZFN are indicated above each pair of lanes. Numbers below each lane indicate the percentage of modified alleles averaged over the duplicates. (Arrows) Appearance and position of the Surveyor cleavage band. (Black box) ZFN pair T2-X6 L5 + R4 that was used for Illumina sequencing analysis.











