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Fig. 2. Agarose gel electrophoresis of PCR amplicons 1–7 (lanes 1–7, respectively) for tissue lesion samples 26M, 27C and 28O and faecal samples 65F, 67F and 80F. The 1 kbp DNA plus Ladder (Invitrogen) was used as molecular size markers and the 1, 2, 3 and 6 kbp fragments are indicated.