9525
Elimination of ETH1 in apn1 strains also increased spontaneous mutation rates 9 - or 31 - fold compared to the wild type as determined by reversion to adenine or lysine prototrophy , respectively .
 GENE: ETH1; GENE: apn1
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
 Entities: ETH1, apn1 
Answer:
 GENE: ETH1; GENE: apn1