7153
Upon HBsAg stimulation, expression of IFN-gamma , IL-2 , IL-4 , and IL-10 was detected in 41%, 8%, 41%, and 50% of the patients , respectively.
 IFN-gamma, IL-4, IL-10, IL-2, HBsAg
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, IL-4, IL-10, IL-2, HBsAg