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Mouse thymoma line EL-4 cells produce cytokines such as interleukin (IL)-2 , IL-3 , IL-4 , IL-10 , and granulocyte-macrophage colony-stimulating factor in response to phorbol 12-myristate 13-acetate ( PMA ).
 Mouse thymoma line EL-4 cells, IL-4, interleukin (IL)-2, granulocyte-macrophage colony-stimulating factor, IL-3, cytokines, EL-4 cells, IL-10
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:
 Mouse thymoma line EL-4 cells, IL-4, interleukin (IL)-2, granulocyte-macrophage colony-stimulating factor, IL-3, cytokines, EL-4 cells, IL-10