Salmonella invasion to the liver on days 3 and 4 post-infection*.

*Samples were enriched overnight at 37°C in Selenite Brilliant Green Sulfa Enrichment (Difco) broth, followed by plating onto Brilliant Green Sulfa Agar (BGS) supplemented with 200 µg/ml nalidixic acid to determine the presence or absence of Salmonella colonies.#Individual trial was analyzed by exact logistic regression via SAS LOGISTIC procedure. SAS GLIMMIX procedure was used for analysis of the two trials simultaneously (combination of the two trials) with trial as a fixed effect, except that, for groups with zero (i.e. the negative control), exact logistic regression was used with trial as stratum via SAS LOGISTIC procedure.NA, not applied; P value for trial effect = 0.09.