12947
The long-term exposure of Jurkat cells to hormone eventually results in a selection of cell clones that have lost Tax activity .
 ( cell line: Jurkat cells, None) , ( cell line: cell clones, None) , ( protein: Tax, 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 line: Jurkat cells, None) , ( cell line: cell clones, None) , ( protein: Tax, None) 