6804
BACKGROUND: Growing evidence indicates that the immune system and the hypothalamic-pituitary-adrenal system are linked by several mechanisms, for example intracellular glucocorticoid receptors ( hGR ).
 ( protein: glucocorticoid receptors, None) , ( protein: hGR, 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: glucocorticoid receptors, None) , ( protein: hGR, None) 