6141
Here we demonstrate, with a site-specific antibody, that STAT3 is phosphorylated on Ser-727 in human neutrophils stimulated with chemotactic factors ( N-formyl-methionyl-leucyl-phenylalanine and complement C5a ), cytokines [ granulocyte/macrophage colony-stimulating factor ( GM-CSF ) and granulocyte colony-stimulating factor ( G-CSF )], or a protein kinase C activator ( PMA ).
 ( protein: STAT3, None) , ( protein: chemotactic factors, None) , ( protein: G-CSF, None) , ( protein: granulocyte/macrophage colony-stimulating factor, None) , ( protein: granulocyte colony-stimulating factor, None) , ( protein: protein kinase C, None) , ( protein: cytokines, None) , ( protein: GM-CSF, None) , ( cell type: human neutrophils, 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: STAT3, None) , ( protein: chemotactic factors, None) , ( protein: G-CSF, None) , ( protein: granulocyte/macrophage colony-stimulating factor, None) , ( protein: granulocyte colony-stimulating factor, None) , ( protein: protein kinase C, None) , ( protein: cytokines, None) , ( protein: GM-CSF, None) , ( cell type: human neutrophils, None) 