11783
Recently , it was shown that purified RAG1 / 2 proteins can cleave DNA hairpins in vitro , but the same activity was also described for a protein complex of the DNA repair proteins Nbs1 / Mre11 / Rad50 .
 RAG1 / 2 proteins, Nbs1, Mre11, Rad50
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 RAG1 / 2 proteins, Nbs1, Mre11, Rad50