12977
Coexpression of the class II transactivator CIITA in these cells, which stimulates highly efficient class II processing without the characteristic decline in barrier function seen in polarized monolayers treated with the proinflammatory cytokine gamma-IFN , facilitates antigen processing from the basolateral surface .
 ( protein: class II transactivator CIITA, None) , ( protein: proinflammatory cytokine gamma-IFN, None) 
Locate the role in the text that participated in the event based on the event type and return it in the event list. 
 Option: Event type: RNA,cell type,protein,cell line,DNA, Arguments type: . 
Text: {0} 
Answer:
 ( protein: class II transactivator CIITA, None) , ( protein: proinflammatory cytokine gamma-IFN, None) 