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Using mutated IL2R alpha promoter constructs in transient transfection and DNA binding assays , we now demonstrate that sequences located immediately upstream and downstream of the kappa B enhancer also contribute to the regulation of IL2R alpha gene expression .
 GENE: mutated IL2R alpha promoter constructs; GENE: kappa B enhancer; GENE: IL2R alpha gene
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
 Entities: mutated IL2R alpha promoter constructs, kappa B enhancer, IL2R alpha gene 
Answer:
 GENE: mutated IL2R alpha promoter constructs; GENE: kappa B enhancer; GENE: IL2R alpha gene