1663
These observations provide strong support for the idea that expression of mutant tRNA can confer a mutator phenotype , including the UVM - constitutive phenotype observed in mutA and mutC cells .
 GENE: mutA; GENE: mutC
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: mutA; GENE: mutC