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In an effort to identify factors involved in the expression of this important erythroid - specific regulatory protein , we have isolated the mouse EKLF gene and systematically analyzed the promoter region .
 GENE: mouse EKLF gene
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: mouse EKLF gene