12930
However, transactivation of the CD4 promoter by ORFs U86 and U89 is independent of the CRE element , suggesting that additional HHV-6 ORFs are likely to contribute to CD4 gene activation.
 ( DNA: ORFs, None) , ( DNA: CD4 promoter, None) , ( DNA: CRE element, None) , ( DNA: HHV-6 ORFs, None) , ( DNA: U86, None) , ( DNA: U89, None) , ( DNA: CD4 gene, 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: ORFs, None) , ( DNA: CD4 promoter, None) , ( DNA: CRE element, None) , ( DNA: HHV-6 ORFs, None) , ( DNA: U86, None) , ( DNA: U89, None) , ( DNA: CD4 gene, None) 