5123
BCL-6 mRNA levels began to decrease 8 to 16 hours after stimulation, before cells entered S phase .
 ( protein: BCL-6, None) , ( RNA: BCL-6 mRNA, 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: BCL-6, None) , ( RNA: BCL-6 mRNA, None) 