1633
Interestingly, reexpression of human MHC class II genes in RJ 2.2.5 x mouse spleen cell hybrids is associated with partial reversion of DRA promoter occupancy to the Raji pattern .
 ( DNA: human MHC class II genes, None) , ( cell line: RJ 2.2.5 x mouse spleen cell hybrids, None) , ( DNA: DRA promoter, 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: human MHC class II genes, None) , ( cell line: RJ 2.2.5 x mouse spleen cell hybrids, None) , ( DNA: DRA promoter, None) 