Expression of tamoxifen-inducible cre-ERT2 is driven from the mouse Htr6 promoter contained on BAC RP23-65B16. This BAC encodes 4 additional genes: Rnf186, Tmco4, Nbl1 and Minos1. The modified BAC vector was introduced to C57BL/6J embryos. This is founder line NIDA108. (J:239228)