6553
Interestingly, when we fused HT-2 cells expressing the EPOR with Ba/F3 cells in a complementation assay , the resulting hybridomas proliferated and potently activated STAT-5 and MAPK in response to EPO .
 ( protein: STAT-5, None) , ( protein: MAPK, None) , ( cell line: Ba/F3 cells, None) , ( protein: EPO, None) , ( cell line: HT-2 cells, None) , ( cell line: hybridomas, None) , ( protein: EPOR, 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: STAT-5, None) , ( protein: MAPK, None) , ( cell line: Ba/F3 cells, None) , ( protein: EPO, None) , ( cell line: HT-2 cells, None) , ( cell line: hybridomas, None) , ( protein: EPOR, None) 