5134
Repair of this insertion by homologous recombination restores the activity of the hprt locus , thus confirming the site of mutation .
 GENE: hprt locus
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: hprt locus 
Answer:
 GENE: hprt locus