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The B . aphidicola argS - rrn DNA fragments from endosymbionts from seven species of aphids had promoter activities in E . coli which ranged from 6 to 135 % of that observed with a comparable DNA fragment of E . coli rrnB .
 GENE: B . aphidicola argS - rrn DNA fragments; GENE: E . coli rrnB
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: B . aphidicola argS - rrn DNA fragments; GENE: E . coli rrnB