| detection of escherichia coli o157 and escherichia coli o157:h7 by the immunomagnetic separation technique and stx1 and stx2 genes by multiplex pcr in slaughtered cattle in samsun province, turkey. | this study was conducted to investigate the presence of escherichia (e.) coli o157 and e. coli o157:h7 and stx1 and stx2 genes on cattle carcasses and in rectal samples collected from samsun province of turkey. a total of 200 samples collected from cattle carcasses and the rectal contents of 100 slaughtered cattle from two commercial abattoirs were tested using the immunomagnetic separation technique and multiplex pcr methods. e. coli o157 and e. coli o157:h7 were detected in 52 of the 200 sampl ... | 2010 | 21113101 |