9672
The absence of slow migrating forms of I kappa B beta following stimulation suggests that the phosphorylation does not necessarily constitute the signal-induced event which targets the molecule for proteolysis .
 protein: I kappa B beta
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: I kappa B beta 
Answer:
 protein: I kappa B beta