MAPT and neuroblastoma: To make direct comparisons of the functionality of sequences differing between H1 and H2 in a human neuroblastoma cell culture system, we generated two new vectors from a MAPT-BAC (generated from PAC61d06 in [26]) and RP11-769P22, named pMAPT-H1 and pMAPT-H2, respectively, by inserting the 143 kb H1 and H2 MAPT gene into identical PAC backbone plasmids.