A loxP site was inserted upstream of exon 1 and a loxP site and FRT flanked selection cassette were inserted downstream of exon 1. The selection cassette was removed leaving exon 1 floxed. (J:201732)
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A loxP site was inserted upstream of exon 1 and a loxP site and FRT flanked selection cassette were inserted downstream of exon 1. The selection cassette was removed leaving exon 1 floxed. (J:201732)