8796
Our unexpected observations of paternal or biallelic expression of WT1 in fibroblasts and lymphocytes , together with the previous findings of maternal or biallelic expression in placentae and brains , suggest that the allele-specific regulatory system of WT1 is unique and may be controlled by a putative tissue- and individual-specific modifier .
 ( cell type: fibroblasts, None) , ( protein: WT1, None) , ( cell type: lymphocytes, None) , ( protein: WT1, 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: fibroblasts, None) , ( protein: WT1, None) , ( cell type: lymphocytes, None) , ( protein: WT1, None) 