Forward primers with an XhoI site include: MHB1457, 5′CCGCTCGAGTGCTAGGCAAACACTCA3′ (−2077 to −2052); MHB1503, 5′CCGCTCGAGTCTCTACACTGTCACTCCCTG3′ (−634 to −605); MHB1505, 5′CCGCTCGAGGGAGCCAAAAAAAGAATGC3′ (−197 to −169); MHB1506, 5′CCGCTCGAGCTGACCAATGGCTTCAAAG3′ (−85 to −58); MHB1532, 5′CCGCTCGAGAATGCAGAACAAAGGGTCAGA3′ (−63 to −34); and MHB1507, 5′CCGCTCGAGGTCTGCGAAGAATAAAAGGC 3′ (−37 to −9).