3308
The MHC class 1 gene expression was inhibited in cells expressing the Ad12 13S mRNA product and in cells transformed with Ad2/Ad12 hybrid E1A gene product harboring the C-terminal part of the conserved region (CR) 3 of Ad12 .
 ( DNA: MHC class 1 gene, None) , ( protein: Ad2/Ad12 hybrid E1A gene product, None) , ( RNA: Ad12 13S mRNA, None) , ( DNA: conserved region (CR) 3, None) , ( protein: Ad12 13S mRNA product, None) , ( protein: C-terminal part, 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: MHC class 1 gene, None) , ( protein: Ad2/Ad12 hybrid E1A gene product, None) , ( RNA: Ad12 13S mRNA, None) , ( DNA: conserved region (CR) 3, None) , ( protein: Ad12 13S mRNA product, None) , ( protein: C-terminal part, None) 