Fig. 2.

Nucleotide sequences of a region of the 28S D1 rDNA gene of Clonorchis sinensis from the common bile duct stone extracts compared to modern sequences among C. sinensis and O. viverrini. A dot (.) denotes a same identical nucleotide position. A non-identical nucleotide denotes nucleotide addition in same position. Each of primer sequences on both sides is indicated by an underline. Alignment gaps are indicated by a hyphen. Sequences for each species have been deposited in the GenBank databases (GenBank accession No.: C. sinensis; EF654661 (stone), AF188121 (K; Korea isolate), AF217096 (C; China isolate), O. viverrini (AF408149).