784
Two adjacent , highly homologous endoglucanase genes , celD and celE from Fibrobacter succinogenes S85 , which were separated by an AT - rich 223 - nucleotide intergenic region were characterized .
 GENE: homologous endoglucanase genes; GENE: celD; GENE: celE
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: homologous endoglucanase genes; GENE: celD; GENE: celE