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Gel-shift analysis in HUVECs demonstrated that PDTC prevented NF-kappa B mobilization by TNF , suggesting that only VCAM-1 induction was controlled by NF-kappa B .
 NF-kappa B, TNF, HUVECs, NF-kappa B, VCAM-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:
 NF-kappa B, TNF, HUVECs, NF-kappa B, VCAM-1