A loxP-flanked neomycin selection cassette was inserted into the EcoRI site located 1.2 kb upstream of exon 2, and a third loxP site placed downstream of exon 6. Chimeric mice were crossed with Tg(Prm-cre)58Og transgenic mice that express cre recombinase in male germ cells. Offspring were selected that had the neomycin cassette excised, leaving exons 2 through 6 flanked by loxP sites. Correct targeting and excision was confirmed by Southern blotting. (J:140012)
Legend:
cx: complex: > 1 genome feature ot: other: hemizygous, indeterminate,... (F): Female
(M): Male
N: normal phenotype
(#): related diseases count