4571
However , the requirement of rev3 for the production of G . C - - > T . A transversions by the rad18 mutator , which induces only these substitutions , was similar to that for rad6 - mediated G . C - - > T . A transversion .
 rev3, rad18 mutator, rad6
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 rev3, rad18 mutator, rad6