Fig. 1

Agarose gel electrophoresis showing PCR products of Rpt2 and PHSSA genes approximately 1022 and 325 bp, respectively. Lanes: M = 1 kb plus DNA molecular markers; 1–16: Isolates (lane 10 and 14: B.trehalosi isolates, please describe the other M. haemolytica positive lanes). N: Negative control-; P: positive control