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Comparison of KG1 to the PMA -unresponsive subline KG1a reveals differences in expression of TNF receptors 1 and 2 ; PKC isoforms alpha , beta I , beta II , and mu ; and RelB , suggesting that these components/pathways are important for DC differentiation .
 RelB, DC, KG1, PMA -unresponsive subline KG1a
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:
 RelB, DC, KG1, PMA -unresponsive subline KG1a