8473
FasL -dependent reporter constructs in MRL-lpr/lpr and C3H-gld/gld CD4(-)CD8(-) T cells were constitutively active, and this activity was largely prevented by mutation of the critical Egr family binding element .
 ( protein: FasL, None) , ( DNA: FasL -dependent reporter constructs, None) , ( DNA: Egr family binding element, 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: FasL, None) , ( DNA: FasL -dependent reporter constructs, None) , ( DNA: Egr family binding element, None) 