Fig. 1From: Flea index predicts plague epizootics among great gerbils (Rhombomys opimus) in the Junggar Basin China plague focusFlea index of great gerbils in positive/negative observations confirmed by Y. pestis culture with LB plates and confirmed by anti-F1 positive/negative for the immunoassay. *t(96) = 3.379, P = 0.001, #: t(96) = 3.127, P = 0.002; both represented significant differencesBack to article page