Atoh1^{tm5.1(cre/PGR)Hzo}

All coding sequence was replaced by a modified cre/progesterone receptor fusion construct followed by an frt flanked PGK-neomycin selection cassette. The selection cassette was subsequently excised by crossing to mice carrying Gt(ROSA)26Sortm1(FLP1)Dym. In the resulting mice, the inducible cre is under the control of the endogenous gene promoter. (J:155932)