FIG. 4.
Enrichment PCR for S. enterica serovar Enteritidis. The graph illustrates the dynamic detection range, i.e., the time during which positive detection is possible, by plotting the CT value against the incubation time. BPW was inoculated with S. enterica serovar Enteritidis at a concentration of 1 CFU/ml, and the mixture was incubated at 37°C. Samples for PCR analysis were withdrawn every 4 h. •, numbers of CFU per milliliter; ▪, results for AmpliTaq Gold mixture; ▴, results for rTth mixture.