Figure 1. Map of the expression vector for M180 and the modification for the P70T vector used for the generation of transgenic mice. Vector includes 5.5-kb Amelx upstream region, exon 1, intron 1, exons 2, 3, 5, 6, 7, and 3' genomic DNA. Location of the P70T mutation is indicated. UTR: untranslated region.