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. 1998 Mar 3;95(5):2503–2508. doi: 10.1073/pnas.95.5.2503

Table 1.

Summary of the three targeting events by using the TVL444P and TVRecNciI vectors

Targeting vectors Total ES cell clones Targeted clones
Mutation in 5′ copy Mutation in 3′ copy No mutation Total targeted
TVL444P 54 17 (31%) 4 3 24 (45%)
TVRecNciI 54 14 (26%) 7 6 27 (50%)