10580
Introduction of a cDNA expression library prepared from a human T-cell line into the Oct-2 -harboring tester strain allowed selection of three Lac+clones out of 1 x 10(5) transformants .
 ( cell line: human T-cell line, None) , ( protein: Oct-2, 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: human T-cell line, None) , ( protein: Oct-2, None) 