13949
More than 50% of TPO -treated UT-7/GMT cells positively stained for Hb .
 ( cell line: TPO -treated UT-7/GMT cells, None) , ( protein: Hb, None) , ( protein: TPO, 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 line: TPO -treated UT-7/GMT cells, None) , ( protein: Hb, None) , ( protein: TPO, None) 