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By deleted and mutated analysis of the IL-8 promoters , the AP-1 and kappa B-like sites were identified as the responsive elements for PMA and ionomycin .
 IL-8, kappa B-like sites, IL-8 promoters, AP-1 and kappa B-like sites, AP-1
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:
 IL-8, kappa B-like sites, IL-8 promoters, AP-1 and kappa B-like sites, AP-1