8467
The aberrant CD4(-)CD8(-) T cells from lpr/lpr and gld/gld mice , which have mutations in the genes encoding Fas and FasL , respectively, have an activated phenotype and constitutively express high levels of fasL mRNA , prompting us to ask what role if any the FLRE and Egr family proteins have in this aberrant expression of fasL .
 ( cell type: aberrant CD4(-)CD8(-) T cells, None) , ( protein: fasL, None) , ( DNA: FLRE, None) , ( protein: Egr family proteins, None) , ( RNA: fasL mRNA, None) , ( protein: FasL, None) , ( protein: Fas, 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: aberrant CD4(-)CD8(-) T cells, None) , ( protein: fasL, None) , ( DNA: FLRE, None) , ( protein: Egr family proteins, None) , ( RNA: fasL mRNA, None) , ( protein: FasL, None) , ( protein: Fas, None) 