5006
We have previously shown that JAK2 becomes tyrosine -phosphorylated in response to GM-CSF in PMN .
 ( cell type: PMN, None) , ( protein: JAK2, None) , ( protein: GM-CSF, 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 type: PMN, None) , ( protein: JAK2, None) , ( protein: GM-CSF, None) 