The transgene contains BAC into which an inducible cre recombinase gene (cre/ERT2) was introduced at the start site to replace the coding sequence of the Agrp gene. The linearized vector was injected into C57BL/6J fertilized oocytes. Founder information and line numbers were not available. The pound symbol (#) is used when no line is specified and/or lines are pooled. (J:221292)