3349
These results demonstrate that one of the first biochemical events which occurs in neutrophils following G-CSF stimulation , activation of a tyrosine kinase , leads directly to the tyrosine phosphorylation of p80c-rel .
 ( cell type: neutrophils, None) , ( protein: p80c-rel, None) , ( protein: tyrosine kinase, None) , ( protein: G-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: neutrophils, None) , ( protein: p80c-rel, None) , ( protein: tyrosine kinase, None) , ( protein: G-CSF, None) 