7872
Here we report that in T cells , Tcf-1 also becomes transcriptionally active through interaction with beta-catenin , suggesting that the Wnt signal transduction pathway is operational in T lymphocytes as well.
 ( cell type: T lymphocytes, None) , ( protein: Tcf-1, None) , ( cell type: T cells, None) , ( protein: beta-catenin, 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: T lymphocytes, None) , ( protein: Tcf-1, None) , ( cell type: T cells, None) , ( protein: beta-catenin, None) 