The 152 kb BAC clone (RP24-377D19) containing the exon coding translational start codon and upstream 133 kb sequence of mouse Mrc1 (CD206) gene was modified by introducing noncoding exon and intron from rabbit b-globulin gene, cre/ERT2, and rabbit b-globulin and simian virus 40 polyadenylation (pA) signal into the BAC. Line numbers were not indicated. The pound symbol (#) is used when no line is specified and/or lines are pooled.