4410
GR expression levels were shown to be rate-limiting for initiating the apoptotic pathway , and a positive correlation between steroid sensitivity and GR -mediated induction of an integrated mouse mammary tumor virus (MMTV) LTR reporter gene was observed.
 ( protein: GR, None) , ( protein: GR, None) , ( DNA: mouse mammary tumor virus (MMTV) LTR reporter gene, 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: GR, None) , ( protein: GR, None) , ( DNA: mouse mammary tumor virus (MMTV) LTR reporter gene, None) 