(a)
(b)
Figure 2: PCR patterns of amplified ITS1 ribosomal region. Lane M: 50 bp ladder molecular weight marker; lane 1 (a, b): negative control; lanes 2-8 (a) and 2-7 (b) denoted to different fluke samples amplified as a single band of 680 bp of bovine and buffalo in Nghe An province.