6392
Furthermore, our studies showed association of the IKK-alpha /beta heterodimer with NIK , IkappaB -alpha and -epsilon in unstimulated cells .
 protein: IKK-alpha; protein: IkappaB; protein: -epsilon; protein: IKK-alpha /beta heterodimer; protein: IkappaB -alpha; cell type: unstimulated cells; protein: NIK
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: IKK-alpha, IkappaB, -epsilon, IKK-alpha /beta heterodimer, IkappaB -alpha, unstimulated cells, NIK 
Answer:
 protein: IKK-alpha; protein: IkappaB; protein: -epsilon; protein: IKK-alpha /beta heterodimer; protein: IkappaB -alpha; cell type: unstimulated cells; protein: NIK