13414
To do this, wild-type and mutant forms of the CD4 cytoplasmic tail were stably expressed in the lymphoblastoid T-cell line A2.01 .
 ( protein: CD4, None) , ( protein: CD4 cytoplasmic tail, None) , ( cell line: lymphoblastoid T-cell line, None) , ( cell line: A2.01, 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:
 ( protein: CD4, None) , ( protein: CD4 cytoplasmic tail, None) , ( cell line: lymphoblastoid T-cell line, None) , ( cell line: A2.01, None) 