13768
Transfection experiments showed that both Stat1alpha and Stat3 inhibited the induction by EPO of gamma-globin and erythroid-specific 5-aminolevulinate synthetase transcripts , resulting in a reduction of the percentage of hemoglobin-positive cells .
 ( protein: Stat1alpha, None) , ( protein: Stat3, None) , ( protein: EPO, None) , ( cell type: hemoglobin-positive 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: Stat1alpha, None) , ( protein: Stat3, None) , ( protein: EPO, None) , ( cell type: hemoglobin-positive cells, None) 