12477
We investigated the regulation of human PML expression by interferons ( IFNs ) and IL-1 in various human haematopoietic lines ( U937 , THP1 , HL60 , NB4 ), in human diploid fibroblasts and in human peripheral blood leukocytes .
 ( DNA: PML, None) , ( protein: IFNs, None) , ( protein: interferons, None) , ( cell line: HL60, None) , ( cell line: U937, None) , ( cell type: human diploid fibroblasts, None) , ( cell line: THP1, None) , ( cell type: human peripheral blood leukocytes, None) , ( protein: IL-1, None) , ( cell line: NB4, None) , ( cell line: human haematopoietic lines, 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:
 ( DNA: PML, None) , ( protein: IFNs, None) , ( protein: interferons, None) , ( cell line: HL60, None) , ( cell line: U937, None) , ( cell type: human diploid fibroblasts, None) , ( cell line: THP1, None) , ( cell type: human peripheral blood leukocytes, None) , ( protein: IL-1, None) , ( cell line: NB4, None) , ( cell line: human haematopoietic lines, None) 