7984
In this study , we tested this notion by using ligation - mediated PCR to assess the formation of recombination - activating gene ( RAG ) - dependent double - strand breaks ( DSBs ) at RSSs 3 ' of Ddelta3 and 5 ' of Jdelta1 .
 recombination - activating gene, RAG, Ddelta3, Jdelta1
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 recombination - activating gene, RAG, Ddelta3, Jdelta1