1956
In addition, after novelty stress the HRBC group, but not the LPS group , showed increased ACTH and corticosterone levels .
 ( cell type: HRBC, None) , ( cell line: LPS group, 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: HRBC, None) , ( cell line: LPS group, None) 