5580
Recently, we and others have shown that thrombopoietin induces rapid tyrosine phosphorylation of Jak2 and other proteins in human platelets and BaF3 cells , genetically engineered to express c-Mpl , a receptor for thrombopoietin .
 ( cell type: human platelets, None) , ( protein: c-Mpl, None) , ( protein: thrombopoietin, None) , ( protein: Jak2, None) , ( cell line: BaF3 cells, None) , ( protein: thrombopoietin, 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: human platelets, None) , ( protein: c-Mpl, None) , ( protein: thrombopoietin, None) , ( protein: Jak2, None) , ( cell line: BaF3 cells, None) , ( protein: thrombopoietin, None) 