3400
n-Acetyl-L-cysteine ( NAC ), a potent antioxidant, blocked NF-kappa B activation caused by IL-4 and by anti-CD40 mAb .
 IL-4, NF-kappa B, anti-CD40 mAb
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, NF-kappa B, anti-CD40 mAb