Majority sequence of Clostridiales order was assigned into Lachnospiraceae (11.35%) followed by Ruminococcaceae (9.81%) and Veillonellaceae
(9.39%), while the Bacteroidiales order was mainly occupied by S24-7 family (7.01%) followed by Prevotellaceae family.
 The RA gut was enriched in gram-positive bacteria and depleted of gram-negative bacteria, including some Proteobacteria and gram-negative Firmicutes of the Veillonellaceae
As regards the Firmicutes phylum, three species from the Clostridiales order were detected, belonging to the Dehalobacteriaceae, Lachnospiraceae and Veillonellaceae
At a finer taxonomic resolution, this study also shows a significant increase in potentially dangerous bacteria from the families Prevotellaceae, Enterobacteriaceae, Veillonellaceae
, and Streptococcaceae in subjects with alcoholic cirrhosis, compared with subjects with hepatitis B cirrhosis and with control subjects.