2980
Vibrio cholerae iron transport : haem transport genes are linked to one of two sets of tonB , exbB , exbD genes .
 GENE: tonB; GENE: exbB; GENE: exbD genes
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: tonB; GENE: exbB; GENE: exbD genes