22031
This approach detects expression profiles of all RNA types , including miRNA ( microRNA ) , piRNA ( Piwi - interacting RNA ) , snoRNA ( small nucleolar RNA ) , lincRNA ( long non - coding RNA ) , mtRNA ( mitochondrial RNA ) and mRNA ( messenger RNA ) without the use of gel electrophoresis .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
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