Objective:To investigate the mechanism of drug resistance of oxaliplatin resistant cell line HCT116, analysis of the effect of changes in the level of LETM1 protein.Methods:85 cases of breast cancer tissues were collected and performed immunohistochemical detection of CD1a, CD83 expressions in TIDC of breast cancer tissues, to discuss its relationship with clinicopathological features including ER, PR, HER-2, TNM staging, diameter of tumor, transfer, neutrophils and lymphocytes ratio (NLR) of breast cancer,...