1690
In consequence, the alternative La mRNA is the result of a promoter switching combined with an alternative splicing mechanism .
 ( RNA: alternative La mRNA, None) , ( RNA: La mRNA, 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: alternative La mRNA, None) , ( RNA: La mRNA, None) 