(HG-F, ctcctgtctgggctgtgag and HG-R, caaaggcagaagtggggtaa) spanned the hg deletion producing a 447 bp product in hg/hg and +/hg mice. The other set (CRADD3a.F, gtccatcagcattcctgaaa and CRADD3.R, tgtccagcaacagcattgt