Using bacterial recombineering the transgene consisting of an 8796bp fragment upstream of the start codon of Smarcd3 containing the Smarcd3-F1 enhancer/promoter was cloned upstream of the CreERT2 expression cassette with flanking H19 insulator sequence was generated. Founder information and line numbers were not available. The pound symbol (#) is used when no line is specified and/or lines are pooled. (J:232545)