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IL-1 induces a rapid, protein synthesis-independent appearance of IL-2R alpha mRNA that is blocked by inhibitors of NF-kappa B activation .
 IL-2R alpha, IL-1, NF-kappa B, IL-2R alpha mRNA
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-2R alpha, IL-1, NF-kappa B, IL-2R alpha mRNA