1671
Both phosphorylation and proliferation were inhibited by IL-6 neutralizing antibodies .
 protein: IL-6 neutralizing antibodies; protein: IL-6
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: IL-6 neutralizing antibodies; protein: IL-6