14285
ACH-2 can be converted to productive infection by stimulation of the cells with 12-O-tetradecanoylphorbol-13-acetate ( TPA ), mitogen or cytokines ( TNF-alpha ), or infection with HSV .
 TNF-alpha, cytokines, ACH-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:
 TNF-alpha, cytokines, ACH-2