1079
Add-back experiments with either cytokines ( IL-2 or IL-6 ), LTB4 or conditioned media failed to restore the proliferative response in the presence of tepoxalin .
 protein: IL-2; protein: LTB4; protein: IL-6; protein: cytokines
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-2; protein: LTB4; protein: IL-6; protein: cytokines