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As several inflammatory cytokines and oxidative stresses are involved in the pathogenesis of HIV-1 infection , we investigated the inhibitory effects of cepharanthine on tumor necrosis factor alpha ( TNF-alpha )- and phorbol 12-myristate 13-acetate ( PMA )- induced HIV-1 replication in chronically infected cell lines .
 inflammatory cytokines, TNF-alpha, cytokines, chronically infected cell lines
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:
 inflammatory cytokines, TNF-alpha, cytokines, chronically infected cell lines