TABLE 1.

Oligonucleotide probes used for the quantitative fluorescence in situ hybridization analysis.

Probe	Sequence (5′–3′)	Specificity	References
EUB338mix	GCWGCCWCCCGTAGGWGT	All bacteria	Daims et al., 1999
ENT	CTCTTTGGTCTTGCGACG	Enterobacteriaceae	Kempf et al., 2000
Lac87	GTGGCGATGCAAGTCTGA	“Ca. G. soehngenii”	This study

With W indicating A or T.