<i>Salmonella</i> 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.将样本于37℃下在亚硒酸盐亮绿磺胺增菌液（Difco品牌）中过夜增菌，随后接种至添加了200 μg/ml萘啶酸的亮绿磺胺琼脂（BGS）平板，以检测沙门氏菌菌落的存在与否。 单组试验采用SAS LOGISTIC过程步进行精确logistic回归分析。针对两项试验的联合分析（即合并两项试验数据），采用SAS GLIMMIX过程步，以试验作为固定效应；但对于含零计数的组别（即阴性对照组），则通过SAS LOGISTIC过程步，以试验作为分层因素进行精确logistic回归分析。NA，即未应用；试验效应的P值为0.09。