In cancerous tissue were mainly Gram-positive non-sporing anaerobes(Eubacterium,Propionibacterium,Peptostreptococcus,etc) which occupied 64.86%(48/74) of examined strains and the positive strains of nitrate reduction test were 59.46%(44/74).

• 胃癌组织检出的主要为革兰阳性无芽胞厌氧菌(优杆菌、丙酸杆菌、消化链球菌等)；占检出菌株的64.；86%25(48/74)；其中硝酸盐还原实验阳性菌株为59