6552
In the present study, we have identified a cellular context (the interleukin-2 [IL-2]-dependent HT-2 line ) in which the EPO stimulation of the EPOR fails to support cellular proliferation, STAT-5 induction , or MAPK activation , despite efficient phosphorylation of the EPOR and JAK2 and inhibition of apoptosis after withdrawal of IL-2 .
 ( protein: EPOR, None) , ( protein: IL-2, None) , ( protein: MAPK, None) , ( protein: EPO, None) , ( protein: STAT-5, None) , ( cell line: interleukin-2 [IL-2]-dependent HT-2 line, None) , ( protein: EPOR, None) , ( protein: JAK2, 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: EPOR, None) , ( protein: IL-2, None) , ( protein: MAPK, None) , ( protein: EPO, None) , ( protein: STAT-5, None) , ( cell line: interleukin-2 [IL-2]-dependent HT-2 line, None) , ( protein: EPOR, None) , ( protein: JAK2, None) 