6680
In addition, we show that PNU156804 does not block significantly the induction of either IL-2 or IL-2R alpha- and gamma- chains but inhibits IL-2 -dependent T cell proliferation .
 IL-2, IL-2
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, IL-2