In conventional PCR, three pairs of mtDNA primers targeted cyt b, cytochrome oxidase II (COII) and ATP6
gene were tested, resulting of 398, 212 and 83 bp amplicons, respectively. Of 20 brands examined using
PCR-southern hybridization, 6 capsules (C1eC6) were found to be porcine DNA positive but none were
positive using conventional PCR method