10686
Interferon-gamma ( IFN-gamma ) is a key cytokine of T lymphocytes with major regulatory functions in the immune system .
 T lymphocytes, IFN-gamma
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:
 T lymphocytes, IFN-gamma