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A multiplex PCR was developed for the rapid detection of genes encoding Shiga toxins 1 and 2 (stx1 and stx2), intimin (eaeA), and enterohemolysin A (hlyA) in 444 fecal samples derived from healthy(More)
Shiga toxin-producing Escherichia coli (STEC) and enteropathogenic E. coli (EPEC) cells were isolated from 191 fecal samples from cattle with gastrointestinal infections (diagnostic samples)(More)
Differences in Mycoplasma hyopneumoniae strain virulence and infection patterns will affect experimental challenge systems used to evaluate vaccine efficacy. Two strains (Hillcrest and Beaufort) were(More)
Capsular types A and D of Pasteurella multocida cause economic losses in swine because of their association with progressive atrophic rhinitis (PAR) and enzootic pneumonia. There have been no studies(More)
Several transposon Tn5-induced mutants of the broad-host-range Rhizobium sp. strain NGR234 produce little or no detectable acidic exopolysaccharide (EPS) and are unable to induce nitrogen-fixing(More)