Exons 4 and 5 were flanked by loxP sites and an FRT flanked neomycin selection cassette was inserted in intron 5 downstream of one of the loxP sites. The neo cassette was subsequently removed by crossing to flp expressing mice. (J:173884)
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Exons 4 and 5 were flanked by loxP sites and an FRT flanked neomycin selection cassette was inserted in intron 5 downstream of one of the loxP sites. The neo cassette was subsequently removed by crossing to flp expressing mice. (J:173884)