Provided are therapeutic compositions comprising a combination of bacteria for the maintenance or restoration of a healthy microbiota of the gastrointestinal tract of a mammalian subject, and methods of use thereof. [Selection] Figure 19哺乳動物対象の胃腸管の健康な微生物叢の維持又は回復のための、細菌の組合せを含む治療用組成物、及び、その使用方法が提供される。【選択図】図19