3399
Stimulation of DND39 cells with IL-4 or anti-CD40 monoclonal antibody ( mAb ) activated phosphatidylinositol 3-kinase and subsequently induced nuclear expression of NF-kappa B , which was identified by electrophoretic mobility shift assays .
 IL-4, DND39 cells, mAb, NF-kappa B, anti-CD40 monoclonal antibody, phosphatidylinositol 3-kinase
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-4, DND39 cells, mAb, NF-kappa B, anti-CD40 monoclonal antibody, phosphatidylinositol 3-kinase