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Since TNF is one of the major inducers of various adhesion molecules in human endothelial cells and their expression is known to require the activation of NF-kappa B , we examined the effect of PTPase inhibitors on the TNF -mediated induction of intracellular adhesion molecule (ICAM)-1 , vascular cell adhesion molecule (VCAM)-1 and endothelial leukocyte adhesion molecule (ELAM)-1 .
 adhesion molecules, TNF, vascular cell adhesion molecule (VCAM)-1, endothelial leukocyte adhesion molecule (ELAM)-1, TNF, intracellular adhesion molecule (ICAM)-1, NF-kappa B, PTPase
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:
 adhesion molecules, TNF, vascular cell adhesion molecule (VCAM)-1, endothelial leukocyte adhesion molecule (ELAM)-1, TNF, intracellular adhesion molecule (ICAM)-1, NF-kappa B, PTPase