Table 1. Oligonucleotide probes used in this study for FISH analysis.

Probe	Target group	Reference
EUB338§	Most bacteria	[15]
EUB338II§	Most bacteria	[15]
EUB338III§	Most bacteria	[16]
Bac303	Bacteroides spp.	[17]
Bif164	Bifidobacterium spp.	[17]
Lab158	Lactobacillus-Enterococcus spp.	[18]
Erec482	Most of the Clostridium coccoides-Eubacterium rectale group(Clostridium cluster XIVa and XIVb)	[19]
Chis150	Clostridium histolyticum group	[19]
Prop853	Clostridium cluster IX	[20]
Delta496a-b-c	Deltaproteobacteria-Gemmatimonadetes group	[21]

^§These probes are used together in equimolar concentrations.