3356
In contrast to previous results obtained using polyclonal antiseras to detect Pan/ E2A proteins , we report comparable levels of Pan proteins in GH/PRL- and insulin- producing , B- and T- lymphocyte cells .
 ( protein: Pan proteins, None) , ( protein: E2A proteins, 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: Pan proteins, None) , ( protein: E2A proteins, None) 