(a)
(b)
Figure 3: RFLP pattern of PCR products of liver flukes collected from bovine (a) and buffalo (b) in Nghe An province, Vietnam, after digestion with RsaI enzyme. Lane M: 50 bp ladder molecular weight marker; lanes 1, 3, 4, 5, and 7 (a) denoted to those of F. gigantica; lanes 2 and 6 (b) denoted to those of Fasciola sp. (intermediate form); lanes 1-6 (b) denoted to those of F. gigantica.