Expression of tamoxifen-inducible cre-ERT2 is driven from the mouse Kcnip2 promoter contained on BAC RP23-146N4. This BAC encodes 5 additional genes: Fgf8, Npm3, Mgea5, Gm6813, and partial 9130011E15Rik. The modified BAC vector was introduced to C57BL/6J embryos. This is founder line NIDA099. (J:239228)