FIG. 2.

Changes in a human fecal microbial community monitored by FISH. Fecal samples were compared with samples from the two fermentors shown in Fig. 1. Samples taken at the end of each 7-day incubation period were analyzed by DAPI staining (total count) (⋄) and by FISH by using a panel of seven oligonucleotides. The average counts are shown for total eubacteria (probe Eub 338) (□), the Cytophaga-Flavobacter-Bacteroides group (probe Bac 303) (○), R. bromii-R. flavefaciens (probes Rfla 729 and Rbro 730) (×), the E. cylindroides group (probe Ecyl 387) (•), the E. rectale group (probe Erec 482) (▵), and the F. prausnitzii group (probe Fprau 645) (▪).