A loxP site and an frt flanked neo cassette were inserted upstream of exon 4 and a second loxP site was inserted downstream of exon 4. Flp mediated recombination then removed the neo cassette leaving exon 4 floxed. (J:153089)
Legend:
cx: complex: > 1 genome feature ot: other: hemizygous, indeterminate,... (F): Female
(M): Male
N: normal phenotype
(#): related diseases count