<unk>  is a species of<unk> s which is found in the gastrointestinal tract.
Retortamonas intestinalis
Prevotella bivia
Pseudallescheria boydii
Bifidobacterium breve
Salmonella enterica subsp. enterica
Prevotella intermedia
Campylobacter upsaliensis
Clostridium perfringens