Table 1.

Characteristics of the probes used for FISH microscopy.

Probe	EUB338	PF2	Strc-493	Lis-637
Specificity	90% of bacteria	All yeast	Streptococcus spp. Lactococcus spp.	Listeria spp, except L. grayi
Target Gen	16S rRNA	18S rRNA	16S rRNA	16S rRNA
Position	338–355	618–636	493–511	637–657
Sequence	5′- GCT GCC TCC CGT AGG AGT -3′	5′- CTC TGG CTT CAC CCT ATT C -3′	5′- GTT AGC CGT CCC TTT CTG G -3′	5′- CAC TCC AGT CTT CCA GTT TCC-3′
Fluorophore	Fluorescein	Texas red	Cy3	Fluorescein