Fig. 2.
Oligonucleotide primer-template pairs used in this study. Unlabeled primer P1 was originally described by Xiong et al. (34). Templates T9 and T2 were originally described by Magee et al. (24), and primers P9, P10, P11, P13, P14, P17, P18, and P19 and templates T11, T12, T13, T14, T17, and T18 were previously described by Magee et al. (23). The RNA oligonucleotides T9RNA, T11RNA, T2RNA, and T12RNA have sequences corresponding to those of the DNA oligonucleotides T9, T11, T2, and T12, respectively.