Exon 3 was flanked by loxP sites and a neomycin cassette flanked by Rox sites was inserted after exon 3 but before the second loxP site. The neomycin selection cassette self-excised leaving exon 3 floxed. (J:282786)
Legend:
cx: complex: > 1 genome feature ot: other: hemizygous, indeterminate,... (F): Female
(M): Male
N: normal phenotype
(#): related diseases count