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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
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
 Entities: mRNA 
Answer:
 RNA: mRNA