2611
In nuclear run-on analysis , such tolerant cells show only a low degree of transcription, indicating that tolerance operates at or upstream of the transcription level .
 ( cell type: tolerant 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:
 ( cell type: tolerant cells, None) 