1858
Rat splenocytes were found to have greater sensitivity to MPL (EC50 = 7.9 nM) than do human peripheral blood lymphocytes (EC50 = 28 nM).
 ( cell type: Rat splenocytes, None) , ( cell type: human peripheral blood lymphocytes, 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: Rat splenocytes, None) , ( cell type: human peripheral blood lymphocytes, None) 