The line was obtained by microinjection of a circular murine BAC transgene (RP24-208F10) previously modified by recombineering at the ATG of the Lyz2 gene of a rabbit-beta-globin intron-cre/ERT2 cassette followed by a flipped PGK-Tn5-Kana/NeoR cassette. The subline 26.19 was analyzed and cryopreserved. (J:82809)