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An 81 - nt tandem duplication of the C - terminal coding region is located adjacent to the termination codon of the CyIIIb gene , a potential relic of a slipped mispairing and replication event .
 GENE: CyIIIb gene
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: CyIIIb gene