Fig. 4From: Adaptational changes in physiological and transcriptional responses of Bifidobacterium longum involved in acid stress resistance after successive batch culturesUpregulated genes after pH challenge in JDM301 and JDM301AR. These genes were grouped according to functional category. a A total of 322 genes were upregulated in JDM301 and b 263 genes in JDM301AR when cells were exposed to acid stress for 1.5 hBack to article page