A loxP site was inserted upstream of exon 1 and a floxed neomycin cassette was placed downstream of exon 4. The neomycin gene was subsequently excised from properly targeted ES cells by transient transfection with a cre expressing plasmid. This resulted in all four exons being flanked by two loxP sites. (J:87435)
Legend:
cx: complex: > 1 genome feature ot: other: hemizygous, indeterminate,... (F): Female
(M): Male
N: normal phenotype
(#): related diseases count