Fig. 2

Agarose gel electrophoresis of PCR amplification products. a, PCR amplification products using CsCOXI primer; b, PCR amplification products using. Cs16S primer; c, PCR amplification products using Cs18S primer; d, PCR amplification products.using Cspds primer; lane M, DNA marker; lane N, negative control; lane F, PCR amplificationproducts offoot DNA; lanes 1-6,PCR amplification products of fecal DNA(N=6).