Original Research
The Combination of PD-L1 and CTLA-4 Suppression Significantly Decreased the Expression Levels of Cancer Stem Cell Factors in the Pancreatic Cancer Cell Line
Nazila Alizadeh 1 
, Tohid Kazemi 1,2, Nima Hemmat 1, Mahdi Jafarlou 1, Behzad Baradaran 1,2 *