TABLE 3.

Z. parabailii differential expression analysis^a

Category	No. of genes
	18-h specific	42-h specific	At both time points	At either time point
Upregulated	117	83	27	227
Downregulated	430	431	158	1,019

^aThe data for the upregulated and downregulated gene categories are the numbers of genes with an adjusted P value of <0.05 and a log₂-fold change of ≥1 or a log₂-fold change of ≤1, respectively, between lactic acid and control conditions. The sets of genes were further classified into those with altered expression only at 18 h, only at 42 h, at both time points, or at either time point.