13953
These findings suggest that TPO has a direct effect on hemoglobinization via a specific receptor on UT-7/GMT cells .
 ( protein: TPO, None) , ( cell line: UT-7/GMT cells, 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: TPO, None) , ( cell line: UT-7/GMT cells, None) 