12172
These results indicate that triptolide induces T cell apoptosis through activating caspases , and suggest the growth arrest and apoptotic effect of triptolide may contribute to the immunosuppressive activity of TWHf extract
 caspases
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:
 caspases