1324
Some of these complexes were demonstrated to contain NF-IL6 by using anti- C/EBP beta Abs .
 protein: NF-IL6; protein: anti- C/EBP beta Abs; protein: C/EBP beta
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:
 protein: NF-IL6; protein: anti- C/EBP beta Abs; protein: C/EBP beta