Polymerase chain reaction (PCR) tests now account for 60 percent of one food-testing company's E. coli O157 screenings
![Polymerase chain reaction (PCR) tests now account for 60 percent of one food-testing company's E. coli O157 screenings](/webdocs/charts/59782/finding_roberts_fig1_768px.jpg?v=5983.6)
Polymerase chain reaction (PCR) tests now account for 60 percent of one food-testing company?s E. coli O157 screenings
Download larger size chart (500 pixels by 296, 96 dpi)