7463
Due to a switch from the use of a 3' polyA site to a more proximal polyA site , NF-ATc expression switches from the synthesis of the two longer isoforms in naive T cells to that of short isoform A in T effector cells .
 ( cell type: T effector cells, None) , ( DNA: proximal polyA site, None) , ( protein: NF-ATc, None) , ( protein: isoform A, None) , ( DNA: 3#$%# polyA site, None) , ( cell type: naive T cells, None) 
Locate the role in the text that participated in the event based on the event type and return it in the event list. 
 Option: Event type: RNA,cell type,protein,cell line,DNA, Arguments type: . 
Text: {0} 
Answer:
 ( cell type: T effector cells, None) , ( DNA: proximal polyA site, None) , ( protein: NF-ATc, None) , ( protein: isoform A, None) , ( DNA: 3#$%# polyA site, None) , ( cell type: naive T cells, None) 