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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 .
 aberrant CD4(-)CD8(-) T cells, fasL, FLRE, Egr family proteins, fasL mRNA, FasL, Fas
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
Answer:
 aberrant CD4(-)CD8(-) T cells, fasL, FLRE, Egr family proteins, fasL mRNA, FasL, Fas