Research progress in relationship between microbes and tumor immunity
Microbes are closely associated with tumor development. The interactions between microbes and immune system contribute to tumor progression and metastasis. This review focused on the interactions between microbes and immune cells (macrophages, T cells, myeloid-derived suppressor cells and other immune cells) in the course of tumor growth, and summarized the roles of microbes in tumor immunotherapies, aiming to improve the overall understanding of the mechanisms for microbes affecting tumors, and provide ideas for tumor prevention and future immunotherapies. 
 
 
Key words: 
Microbes; Tumor; Immune cells; Immunotherapy