TABLE 2.

Relative abundance of ryhB and rpoB transcripts in N16961 grown in LB with or without dipyridyl and in the suckling mouse small intestine

Growth condition	ryhB/rpoB abundance ratioa
LB	1.1
	3.7
LB + 100 mM dipyridyl	1,690
	7,860
Murine intestine	9.9
	18.6
	19.5
	42.6
	192.1

^aTranscript abundance for each gene was calculated based on a standard curve generated using in vitro transcribed RNA. For each sample, RyhB abundance was normalized to the level of RpoB RNA, which is relatively constant. Normalization corrects for variation in the total amount of RNA present in the RT reaction mixtures. Note that ratios were generated using arbitrary units, rather than absolute values. Each value presented is derived from an independent experiment.