1088
By expressing mutant forms of the human protein in this cell line , we have been able to delineate the sequences responsible for both the ligand-induced phosphorylation and the degradation of I kappa B alpha .
 cell line: cell line; protein: I kappa B alpha
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
Answer:
 cell line: cell line; protein: I kappa B alpha