The researchers focused on two major groups of bacteria - the Bacteroidetes and the Firmicutes - that together make up more than 90 percent of microbes found in the intestines of mice and humans.

• 研究人员关注两个主要菌群拟杆菌和厚壁菌，他们一起组成90%25以上的人和小鼠肠道发现的微生物。