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Our data suggest that lipoxygenase metabolites activate ROI formation which then induce IL-2 expression via NF-kappa B activation .
 IL-2, NF-kappa B, lipoxygenase, lipoxygenase metabolites
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
Answer:
 IL-2, NF-kappa B, lipoxygenase, lipoxygenase metabolites