Table 3.

Transfer of genetic material by vesicles isolated from E. coli O157:H7 to E. coli JM109

E. coli JM109 cell stateNo. of colonies positive/no. tested for target gene:
eaestx1stx2
Competent cells0/54/5NDa
Noncompetent cells3/55/55/5
  • a ND, not determined.