A single loxP site was inserted in intron1 and a floxed PGK-neomycin selection cassette was inserted in intron 4. The selection casette was subsequently removed from properly targeted ES cells by cre excision leaving exons 2-4 flanked by loxP sites. (J:184284)
Legend:
cx: complex: > 1 genome feature ot: other: hemizygous, indeterminate,... (F): Female
(M): Male
N: normal phenotype
(#): related diseases count