2840
To determine whether transcription of orfX and vfr are controlled by the same mechanisms that control transcription of the region of the divergent ORF ( dorf ) and of crp , we compared the vfr - orfX and crp - dorf intergenic regions .
 GENE: vfr; GENE: crp; GENE: vfr; GENE: crp
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: vfr; GENE: crp; GENE: vfr; GENE: crp