These mice carry loxP sites flanking exon 2 of Vcl gene. When crossed with a Cre recombinase-expressing strain, this strain is useful in eliminating tissue-specific conditional expression of Vcl gene. While Vcl-Flox(2)(Stock No.NM-CKO-215084) mice carrying the loxP sites flanking exon 3 of Vcl gene. (J:238766)