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A result of this activation process is the induction of a number of genes, including those encoding cytokines such as interleukin-2 , tumor necrosis factor-alpha , and interferon (IFN)-gamma which have important immunoregulatory effects .
 interferon (IFN)-gamma, cytokines, interleukin-2, tumor necrosis factor-alpha, immunoregulatory
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:
 interferon (IFN)-gamma, cytokines, interleukin-2, tumor necrosis factor-alpha, immunoregulatory