9901
Transient transfection of a B lymphoma line resulted in up to 89% reduction of constitutive MHC class II expression within 5 days and suppression of HLA-DRA mRNA synthesis .
 ( RNA: HLA-DRA mRNA, None) , ( protein: MHC class II, 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:
 ( RNA: HLA-DRA mRNA, None) , ( protein: MHC class II, None) 