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In NK3.3 cells , IL-2 induced comparable formation of c-fos promoter sis-inducible element IFN-gamma-activated sequence-binding complexes containing STAT3 alone with complexes containing STAT3 and STAT1 alpha , while in preactivated primary NK cells , it preferentially induced complexes containing STAT3 and STAT1 alpha .
 IFN-gamma-activated sequence-binding complexes, c-fos promoter sis-inducible element IFN-gamma-activated sequence-binding complexes, NK3.3 cells, STAT3, STAT1 alpha, preactivated primary NK cells, STAT3, STAT1 alpha, STAT3, IL-2, c-fos promoter
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:
 IFN-gamma-activated sequence-binding complexes, c-fos promoter sis-inducible element IFN-gamma-activated sequence-binding complexes, NK3.3 cells, STAT3, STAT1 alpha, preactivated primary NK cells, STAT3, STAT1 alpha, STAT3, IL-2, c-fos promoter