The Main Bacterial Phyla of the Human Gut Microbiota o Seven phyla constitute the bulk of the human gut bacteria Firmicutes 硬壁菌门 Bacteroidetes 拟杆菌门 Proteobacteria 变形菌门 Fusobacteria 梭杆菌门 Verrucomicrobia 疣微菌门 Cyanobacteria 蓝藻细菌门 Actinobacteria 放线菌门 o The firmicutes and bacteroidetes accommodate the most abundant species and constitute over 90% of the human gut microbiotaThe Main Bacterial Phyla of the Human Gut Microbiota  Seven phyla constitute the bulk of the human gut bacteria  Firmicutes 硬壁菌门  Bacteroidetes 拟杆菌门  Proteobacteria 变形菌门  Fusobacteria 梭杆菌门  Verrucomicrobia 疣微菌门  Cyanobacteria 蓝藻细菌门  Actinobacteria 放线菌门  The Firmicutes and Bacteroidetes accommodate the most abundant species and constitute over 90% of the human gut microbiota