Exon 2 was flanked by single loxP sites. An frt flanked neomycin resistance cassette was inserted upstream of the floxed region, in intron 1. Flp-mediated recombination removed the neomycin resistance cassette and left exon 2 floxed. (J:199683)
Legend:
cx: complex: > 1 genome feature ot: other: hemizygous, indeterminate,... (F): Female
(M): Male
N: normal phenotype
(#): related diseases count