A loxP site was introduced into intron 1 and an frt/loxP-flanked neo cassette was introduced to intron 2 via homologous recombination. The neo cassette was removed by transient expression of flp recombinase in correctly targeted ES cells. Resulting mutant mice carry a floxed exon 2 allele. (J:82744)
Legend:
cx: complex: > 1 genome feature ot: other: hemizygous, indeterminate,... (F): Female
(M): Male
N: normal phenotype
(#): related diseases count