A loxP site was inserted into intron 1. An frt-neo-frt-loxP cassette was inserted into intron 2. Crossing with mice expressing flp recombinase removed the neo, leaving exon 2 flanked with loxP sites. (J:121576)
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A loxP site was inserted into intron 1. An frt-neo-frt-loxP cassette was inserted into intron 2. Crossing with mice expressing flp recombinase removed the neo, leaving exon 2 flanked with loxP sites. (J:121576)