Department of Pathogen Biology of Basic Medicine Medical University 050017;
Research Unit of Digestive Tract Microecosystem Pharmacology and Toxicology Academy of Medical Sciences 050017;
Institute of Basic Medicine Medical University 050017;
Shijiazhuang Great Wall Integrated Traditional Chinese and Western Medicine Hospital 050035;
Hebei Food Safety Key Laboratory Food Inspection and Research Institute 050227;
College of Forensic Medicine Key Laboratory of Forensic Medicine Innovation Center of Forensic Medical Molecular Identifi cation Medical University 050017;
Lactobacillus gasseri; ANTAGONISM; BACTERIA; Safety evaluation;