12975
Intestinal epithelial cells can express HLA class II antigens and may function as antigen-presenting cells to CD4(+) T cells within the intestinal mucosa .
 ( cell type: antigen-presenting cells to CD4(+) T cells, None) , ( protein: HLA class II antigens, None) , ( cell type: Intestinal epithelial cells, 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:
 ( cell type: antigen-presenting cells to CD4(+) T cells, None) , ( protein: HLA class II antigens, None) , ( cell type: Intestinal epithelial cells, None) 