C
Figure 4. The specificity test. A. Specific test strip test: N
negative control, 1-4 are Yersinia enterocolitica O:9,
Escherichia coli O157, Salmonella enterica serovar Urbana
O:30, and Francisella tularensis , 5,6 Brucella ;
green arrow was the quality control line, and orange arrow was the
detection line. B. Specificity was detected by the fluorescence
quantification method.