The fusion of Cre recombinase and optimized estrogen receptor ligand-binding domain (CreERT2) was inserted into the first Pdzk1ip1 exon in the RP23-68O6 BAC clone. Three founder lines were generated. One line in pure C57BL/6 background was chosen for all further experimentation. The line number was not provided. The pound symbol (#) is used when no line is specified and/or lines are pooled. (J:259030)