Exon 4 was floxed. Cre-mediated recombination removed the floxed neo cassette and left exon 4 floxed. (J:193546, J:216678)
Legend:
cx: complex: > 1 genome feature ot: other: hemizygous, indeterminate,... (F): Female
(M): Male
N: normal phenotype
(#): related diseases count