Fig. 3

Average percent of samples indicated during the first sessions with novel samples in Experiment 2 and Experiment 3. Error bars represent the standard error of the mean (SEM). Novel samples are denoted with an *. Brucella-positive sample types appear to the left of the vertical dashed bar while Brucella-negative samples appear to the right. Experiment 2 included novel samples of younger samples (5-day incubation) which were replaced by spiked fecal samples in Experiment 3. Specifically, Experiment 2 session included 10 total Brucella-positive samples: 3 samples each of *5 + and 10+ (with one blind sample for each type), and 2 samples each of 7 + and 12+. Additionally, 18 samples of each Brucella-negative sample type (7-, 10-, 12-, E. coli, and novel *5BA-) were presented. Experiment 3 also included 10 total Brucella-positive samples: 3 samples each of 10 + and *Feces+ (with one blind sample per type) and 2 samples each of 7 + and 12 + and 18 samples of each Brucella-negative sample type (7-, 10-, 12-, E. coli, and *Feces-)