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We describe a method for relative quantification of specific mRNA using a nonradioactive assay based on DNA strand competition between identical sequences of biotin- and fluorescein-labeled amplicon (probe) and unlabeled amplicon (target) during hybridization .
 ( RNA: 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: mRNA, None) 