3151
The strategy uses RNA ligase to add DNA oligonucleotide priming sites to the RNA for subsequent reverse transcription and PCR ( RNA ligase , reverse transcription - PCR , or RL / RT / PCR ) .
 GENE: RNA ligase; GENE: RNA ligase
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
Answer:
 GENE: RNA ligase; GENE: RNA ligase