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The nuclear activity of NF-kappa B is tightly regulated from the cytoplasmic compartment by an inhibitory subunit called I kappa B alpha .
 protein: inhibitory subunit; protein: NF-kappa B; protein: I kappa B alpha
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
 Entities: inhibitory subunit, NF-kappa B, I kappa B alpha 
Answer:
 protein: inhibitory subunit; protein: NF-kappa B; protein: I kappa B alpha